Izax

Nah. As long as your instance is federating with all the ones that you want to interact with, there isn’t much of a reason to have multiple accounts. However, if you want to see and interact with content that your main instance has blocked, you might then make another account.

As far as I am aware, logins are not federated. I would think that federating the logins would give opportunities for other instances to potentially decode your password because of the way that federation works.

I have seen others explain it like email. Email accounts will still exist regardless of if, say, Gmail shuts down. Same with fediverse instances. Unlike traditional social medias like Facebook and Twitter, people can talk to people on other sites. Imagine if people on Twitter and Facebook could reply to each other