Nobody is debating that it's legal. They're within their rights but it's unethical and extremely worrying since Elon's stated goal is to make X the everything app for communication, payments, and whatever else. The fact that he's more than happy to abuse his power just because he can makes the prospect of X growing horrifying. It would be an app where they own you and you own nothing.
I just see as a sign it's never gonna work. Not under Elon, not X. He's a megalomaniac idiot...
And I don't see how it's "unethical" either. It's annoying, rude, stupid, ridiculous, shitty, sure. But unethical? They didn't promise anything, they even gave some compensation even though they didn't need to, right? Ethics isn't even objective so I just don't think that's remotely meaningful, what ethical boundary are they overstepping? "To forcibly change someone's social media handle is unethical"?
IDK, just don't use Twitter!! I guess I just don't see this as a big issue because I think Twitter is dumb, I suppose if you use the app a lot... IDK.
I don't use Twitter, but the reason I think this is a bigger deal is because of the stated intention to expand it's scope. Taking your account now means you can't use a shitty social media app, but it would be a huge disruption if he pulls of what he wants and shows he'll do things against his users interests if he feels like it. I won't touch anything he makes with a 10 foot poll.