Because let’s say you’re Tom Hanks. And you get TomHanks@Lemmy.World
Well, what’s stopping someone else from adopting TomHanks@Lemm.ee?
And some platforms minimize the text size of platform, or hide it entirely. So you just might see TomHanks, and think it’s him. But it’s actually a 7 year old Chinese boy with a broken leg in Arizona.
Because anyone can grab the same name, on a different platform.
It doesn’t matter if it’s a post of Taylor Swift or someone from /r/wallstreetbets convincing the mob to short RDDT and to move to Lemmy, we are talking about any random scenario that manages to get 300k people interested in Lemmy.
That scenario is the killing of the third party apps, and is still ongoing