Isn’t this what upvotes and downvotes are for? Do they only want posts about billionaire mega corporations? 10% is a really strict cutoff for people that make things as a hobby. What else am I gonna post when everything else is already posted instantly?
In the sub I helped mod, it was a necessary way to reduce spam. Our rule was simple - no links to storefronts.
link to reviews, link to release announcements, blog posts / devblogs - fine! link to steam or etsy or whatever - nope.
without this nuance, it quickly devolved into a few folks flooding the forum for personal promotion. with the nuance, they’d have to create content - blogs, reviews etc., - that would actually be worth visiting instead.
YMMV, and I think this also very subjective depending on the kind of creators involved.