I love the fact that the show has changed who was responsible for the Genosha attack here
In the comics making it Xavier's Evil Long Lost Twin Sister was honestly such a stupid cop-out, both because it was so random and also because it had the same energy as "This homophobic politician must surely be actually a closeted gay man himself!" as if the abuses and atrocities that minorities suffer are somehow always our own fault and not the fault of our oppressors
Here?
The people responsible for the Genoshan war crime are both 100% human
Bolivar Trask is a pathetic snivelling weak minded bigot, typical of many like him
And Sinister is quite literally the personification of the coloniser and the slave-trader. I mean he's LITERALLY an upper class asshole from Victorian England for one thing and during that time he bought exploited mutants from freak shows and insane asylums to use in his experiments, similar to the way IRL anyone who was "Deformed" or who was anything other than a neurotypical, physically average cishet white christian male was at risk of being bought and sold as a commodity from such places by people just as despicable as this fucking mad science Dracula is
And his colonising extends to his own genetics. The man appropriated mutant culture in the most literal way by harvesting their DNA to alter his own to give himself superhuman abilities and immortality
Instead of diluting the impact of the story by going "Oh, Xavier has an evil twin sister we've never seen before" this is very much a story about the evil of the oppressor destroying a safe space that the oppressed have created for themselves
Now you've made me realise they totally should have used Mr Sinister in X-men First Class instead of weirdly making the head of the hellfire club a nazi mad scientist or whatever they did to Sebastian Shaw.
Mr Sinister is an evil mad scientist who is obsessed with a master race, plus he's immortal too, so why WOULDN'T he try and work with the Nazis if he was around at the time.
Shaw's whole role in the film feels like it should have been written for Sinister instead honestly
And ironically the film that came out right after would have been a better place to introduce Shaw as the villain, since it was all about the Sentinels and Shaw in the comics was involved in directly financing those to make money playing both sides, because like all arms dealers, he's got no problem if the weapons he's selling are being used against people like him, as long as they aren't being used on him specifically
Who's been lurking behind the scenes? It's been Sinister all along Who's been harvesting mutant genes? It's been Sinister all along
He's duplicitous (ha-ha!) X-gene-covetous That you haven't even noticed And the pity is (the pity is) Pity, pity, pity, pity
It's too late to fix anything Now that Jean Grey's clone has gone wrong Thanks to Sinister (ha!) Mister Sinister It's been Sinister all along!
And I helped Gyrich, too!