Look, write your revisionist fanfic, create your fanon, share your HCs that rewrite portions of canon, do all the things that mess with an IP.
Do not let thoughts about what the creators might think of your ideas and works stop you.
What we owe original creators is the freedom to create without being insulted, harassed, and threatened. That's it. Once their work is put out in public, as Mary Kirby made a point of, it's ours to play with as we want. The original works exists and will always be there, existing, absolutely unable to be harmed or changed by what we produce in fandom.
Ten years ago when I was active in a few writer's forums outside of fandom it was pretty common for other writers to be offended when I said I wrote fanfic. They'd go on about how that's a practice that limits creativity and anyway, won't someone think of the poor authors who's hard work and vision I was treading on? It's wild to me that I see a similar argument now popping up within fandom to justify telling folks what to or what not to write.
Not being bound by canon, tearing through IPs to break the down and reassemble them, taking joy in not adhering to what companies that control IPs dictate for their properties -- these are all radical acts of creativity that have immense value and make a statement about just who owns the stories we're sold.
And if there's stuff going on in fandom that bothers, triggers, or angers you? Filters and blocks. Curate your experience. You don't owe anyone a follow and can absolutely limit what you see for the most important or the pettiest of reasons. Keep yourself healthy and safe.