retooted Fedi.Tips
There has recently been a wave of AI-generated accounts signing up pretending to be real people.
Server admins are trying to ban them as quickly as they are discovered, and some servers have temporarily closed sign-ups while they deal with it.
If you spot an account you think might be AI-generated, click ⋯ on one of the account's posts and select "report". Remember to give your reason for reporting, so that the admin knows what to look for.