Oh man, no, of course there's no need for blocking here--- The thing is, I've seen a very specific (small) crowd of people in this fandom who constantly accuse us quote-unquote 'Aziraphale defenders' of acting like we think Aziraphale is a perfect and wholly innocent being, but the truth is that our own pushback against the excessive criticism of him is exactly because of that: excessive criticism.
I haven't seen a single post trying to dwell in the character's motivations and the reasons why he's made the choice he made who either ignores the fact that Aziraphale is a flawed being who makes mistakes, nor wholly shifting the blame of the Divorce(tm) on Crowley. All of the meta posts trying to say "Look, Aziraphale isn't the selfish, stupid, downright villanous individual y'all are trying to paint him as" that I've read always come down to the same conclusion, AKA that there is no inherent right nor wrong side in the breakup, and that both Aziraphale and Crowley are equally right about certain things and wrong about others.
Shades of gray is the whole point of Good Omens, and that is the point we are trying to reiterate in the face of what ranges from a more 'shallow' interpretations of Aziraphale's actions all the way to pinpointing on him such a wealth of negative traits the it makes you wonder why these fans even like to ship the ineffables together in the first place.
So no, reasonably pointing out Aziraphale's mistakes certainly won't win you a block on my part, and I a 100% agree with you on the fact that Aziraphale is a complex, multifaceted and ultimately flawed character who made, and makes, mistakes. Because both his and Crowley's core is that: they are as human as they can get while being who they are, and humans are fallible.
That said I have to admit I also take umbrage with the "Aziraphale is selfish for trying to drag Crowley back to his abusers" argument. Not in the way you personally presented it, because your version of it takes in consideration the fact that Crowley has withheld a lot of information from Aziraphale that we, as the audience, can instead garner. Your version is wholly fair and I have no objections to it-- But since the topic came up I might as well vent about other, far more unfair versions of this particular argument that I've seen floating about lol
I think a lot of people truly do not realize just how much more insight we have into Crowley's mind, as the audience, much more than Aziraphale himself does by Crowley's own design.
Aziraphale was wrong in even considering the idea of reinstating Crowley as an angel, that is undeniable-- But at the same time I also understand why, in his manic desperation trying to find a way to keep them both safe AND together as they wished to be for so long, Aziraphale fell into that specific pitfall.
Let's be real, what is he supposed to think? He met an angel who looked so happy and carefree, who, like Aziraphale, seemingly had no qualms in showing their unbridled joy in ways that, perhaps, aren't as common between angels as we might think. It's clear that that first meeting left an impression on Aziraphale, that he liked seeing such a happy angel and, to fall in the realm of speculation, perhaps he might have even felt a kinship with the angel who Crowley was that he hadn't ever felt before.
And then that angel was gone, and who Aziraphale met after all was said and done was a demon who, yes, retained that playful core, but was also a lot more barbed, guarded, jaded.
Crowley spent an eternity telling him not so subtle terms that being a demon kinda sucks. He tells Aziraphale "my lot does not send rude notes", and he convinces him to slack off when it comes to their jobs and do much more fun things like enjoying earth and humanity, and says "I didn't fall, I just sauntered vaguely downward", and asks Aziraphale for something that could risk destroy his very existence as "insurance".
In the face of this, what is Aziraphale supposed to think? We as an audience have a lot more insight when it comes to how Crowley doesn't really like working for Hell, but he also despises Heaven just as much. It is obvious, for us, that Crowley has a lot of intricate feelings and arguably a certain amount of trauma when it comes to the Fall and the way Heaven operates. Obviously Crowley very much despises both sides and wants nothing to do with either of them, but... Does he show this to Aziraphale? Or does he communicate to him in both subtle and less unsubtle terms that he really doesn't want to be a demon?
When you put together these elements, imo reinstating Crowley as an angel seems kind of the inevitable and only conclusion Aziraphale could possibly arrive at.
To be clear I also don't want to ignore those times Crowley teases Aziraphale for the decisions made by God and Heaven, like the Flood, obviously pointing out that Heaven and Hell are truly two sides of the same coin, but I think this is where Aziraphale's cognitive dissonance comes into play in disastrous ways.
I think that, deep down, under all those layers of denial and double thinking Aziraphale deploys to not fall into some sort of crisis of identity/faith and lose his marbles, Aziraphale knows just how hurtful the suggestion of making Crowley an angel again was, just as much as he deep down knows that Heaven is bullshit and that there's really no good guy nor bad guy, here. But to accept those concept, to fully shed the denial and internalize those ideas, well... He's got some work to do, and I truly think his character arc in S3 will very much focus on him finally accepting the 'shades of gray' concept fully, letting go of the good/bad dichotomy and finally free himself of those shackles he's both been forced into and then kept on himself as a coping mechanism.
And I, for one, can't wait to see that happen <3