Years ago on Twitter, I would use follower counts as an indicator of authority or perhaps as a way to gauge someone’s impact on a community or topic. With so many followers, he or she must have useful or interesting things to say, right? That probably wasn’t a great way to think about follower counts even then, but it worked as often as not.
I quit Twitter with thousands of followers. Many of which I'd say were bots. Accounts with millions of followers also have a huge percentage of bots following them. I restarted my account from scratch and now only have dozens. Follower count means nothing about the person behind it.
Reminds me of this 2014 post.