Ah, I see what you mean. Yeah, that is a major issue.
An interesting part of it is that I’m not use how much of that is the service working as intended (even in abstract ways, like promoting interest-grabbing things) and how much is abuse of the service (basically SEO for social media posts, using botfarms to promote content, etc.). And just to be clear, it’s still a fault of the platform if it’s being abused by organized think-tanks and advertisers. Whereas in Lemmy and Mastodon, the openness and customisability would communities to adjust ‘the algorithm’ that decides which posts to promote, or just block things that are unwelcome in their community.