All of your account data can be exported, and everything except for toots (and media) can be imported.
https://news.ycombinator.com/item?id=26882318
I guess this isn't reflected in joinmastodon.org yet. Each instance can also choose to call posts whatever they want:
https://www.reddit.com/r/mastodon_social/comments/9mhzu8/how...
Either way, that alone seems like it would present a pretty serious obstacle to anyone taking Mastodon remotely seriously.
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
If it is, have you considered running your own instance?