For the same reason I still called Alphabet - Google, and Meta - Facebook. I refuse to let large corporations just try and shake off their shitty past with a name change.
I'm just sick of every article in existence calling it "X formally known as Twitter" like what's the point, just either say X or say twitter it's filler bullshit to extend the article.
I really don't have a passionate stance about it, I just know I called it Twitter for ages, X is shitty branding and isn't going to work, and I stopped using the platform well before Musk took over, so I'm not doing any sort of mental labor trying to make myself use the crap name he chose.
It's a dead website to me, and it's everyone else's problem that they trapped themselves on Twitter, having no career without it. I'm not doing a single thing on behalf of anybody who is still there, those are ghosts, let them howl in the attic, I don't work here.
It's not a human person. It's a website full of assholes. I would make an effort for a transitioning person, but not for Elon Musk and his ham-fisted stupidity, for the folly of some wealthy prick.
Shouldn't renaming a social media really be up to the users? Shouldn't twitter users vote on that?
We just conceded that social media are owned by some corporate entity but the only values is in the users themselves. They build it. They should "own" and control the social media democratically, it should be accountable to them. It seems much more obvious than with traditional media that these should be democratic institutions.
Elon Musk behaving so blatantly stupid is unusual but the problem is really much larger.