If you were chased here from Twitter, it's just possible that you won't be aware that a lot of people are now leaving Twitter (or X if you must) for BlueSky. I mention this because I personally very much valued having a thriving maths community on Twitter while still being part of the wider world, so to speak. My experience here, which may be as much my fault as Mastodon's, is that there are lots of interesting people but not quite the atmosphere that I liked on Twitter. It would be a bit cheeky of me to suggest deserting Mastodon, but perhaps you might like to consider trying out BlueSky -- I would be very happy if we could use it to recover what Musk stole from us.