This might be the first post in this thread stating the alleged actual reason for the bans: they posted screenshots of the location tracking or linked to the Mastodon tracker account, breaking the rule against sharing real-time locations. That's the claim at least. Also, Musk states that these bans are not permanent and the accounts will be reinstated:
https://twitter.com/elonmusk/status/1603591994244071424 He also posted a poll on the suspension time:
https://twitter.com/elonmusk/status/1603609466301059073