I didn't post this when it first showed up recording the 11 month year here.
To summarize, an absolutely not popular person with less than 500 followers is in the top 1% of mastodon.social users, and even has their own exclusive hashtag apparently (i just looked).
My purpose of creating the hashtag is for people's content that is exclusively on mastodon and nowhere else unless it's an old photo from the past then it might exist elsewhere of course.