I think that makes a lot of sense. Reddit was also like that, I moderate /r/me_irl, rival of /r/meirl. But now you can also use the same names if you want.

What about usernames though? Are they universal throughout Lemmy?

I'm confused to be honest, but I admit I just started. But like, where do I look at pictures of houseplants and post mine? Do I find a server devoted to houseplants? Or maybe I should just finally figure out Instagram for that.