Look, I appreciate you pushing on the UX aspects of the fediverse here. But let me ask yout something. What’s your email address? Is it Lost_My_Mind? No? Oh, because it’s got an @whatever.com on the end? Why is that? Why don’t we have one global, centralized namespace for email usernames such that there’s only a single Lost_My_Mind in the whole world?

You’re ignoring the thing about federal election funds. Is attempting that goal a “waste?” By that logic, in a solidly blue state, voting for any major party candidate is also a waste because you as an individual can’t impact the outcome.