Often this all gets framed as a "freedom of speech" issue. But I know first hand of women who in recent months on X have been harassed with death threats. When they've reported it has been ignored because the company simply lacks the resources/will to enforce those policies.
And so even if Threads is nothing more than a better-staffed clone that is enough for them.
We don’t vilify the phone company when someone uses a phone to make a bomb threat. Why is this different?
You don’t report crime to the communications service provider. If someone makes a bomb threat you aren’t dialing 0 to tell the phone company.
No one can squat on your handle and, even though you don't technically own a domain, you get a lot more protections with a domain name than you do with a platform based handle. It's much harder to revoke a domain than it is for someone to kick you off their platform.