Here's a comment for incoming Twitter users: I've found that some are really put off by the way Mastodon requires push and pull to get to information. Rather than Elmo telling you what to read (and steering you to most incendiary content), you have to go look for it and choose to consume it. Most notably, I've come to think of "Content Warnings" as instead subject lines, just like you'd use in an email, so readers can scan whether they want to read further.
@emptywheel lt just feels like a really high barrier to entry right now even to figure out how to follow people. Working on it, though...
@LauraClawson
You can look through responses to posts you like and followers of interesting accounts to find people you want to follow. Another great way is to search by hashtag (and use them yourself as well). It takes a while. I find it useful to do short sessions but more of them over time. And respond a lot! And post, and boost some. That will let people find you. Good luck!