Mastodon is immune because it doesn't have any influential users.
Imagine how twitter will be if it never displayed any counts - followers, like, retweets etc nothing is shown to the user, even if they used all of it in the background, just by not showing it will have enormous impact on user behaviour.
Linkedin did that by not showing connection count beyond 500, to dis-incentivize people from making connection requests like facebook friend requests.
Architecture in Mastodon case makes it not attractive for influencers as compared to other platforms(IG, twitter etc) where they have higher Return on Effort put in.