Mastodon has a "profile move" feature that moves all of your followers (on instances that support the protocol) to your new account. However, it will not move your toots (posts).
All of your account data can be exported, and everything except for toots (and media) can be imported.
Imagine a "Tweet to Fart" extension in the same vein as "Cloud to Butt". Lets see: "How could you refart that fart?! :angry_face: That's a terrible fart." Maybe I'm just juvenile but that might be funny enough to make twitter usable again.
In other words, I don't really mind "toot". It casts the medium with a healthy perspective on itself.
I would say that moving the posts is what worries me more about moving the account. I can refollow everyone, but I can't post hundreds (or thousands) of posts in their original datetime
All of your account data can be exported, and everything except for toots (and media) can be imported.
https://docs.joinmastodon.org/user/moving/