It's like this is the 21st century version of the San Francisco story where Yung refused to sell their house to the robber baron Cocker, leading Cocker to build an expensive three story tall fence around the house forcing Yung to move.
Elon jet is alive and well over there.
It currently had 41k followers, and 2.5k likes on the post about it being banned on Twitter.
Comparatively, Elon's most recently Twitter post ("Twitter right now is <four fire emoticons>") has 186k likes.
It seems very unlikely the "great exodus" is happening or likely to happen due to this, at least to Mastodon.