If Mastodon became as popular as Twitter it would end up with at least part of it being almost the same as Twitter. The main reason for the differences are that very different types of people are using the two platforms currently.

It’s how Twitter started. You followed people because they were your friends or had similar interests. It being a platform mainly for celebrities and influencers came later.

Have they actually said it? I’ve always assumed .old wouldn’t be around forever. I’m sort of surprised it’s lasted as long as it has.