Personally, I strongly dislike the requirement of 100 followers. It puts a lot of emphasis on building your own audience, whereas I joined Medium specifically because I had no audience but wanted access to the built-in audience for AI content. I would have lost out on a lot of earnings ($200+) from my 3rd story because I didn't have an audience built up yet. I might not have bothered trying to write it if there were little prospect of earning from it (I didn't know it would be so successful).