We ask open ended questions just to assess your general response. If we want other information, we'll ask more focused questions. There isn't a right answer and we get paid by the hour so you're not wasting our time.
I honestly don't think this political gamesmanship will really have an impact. For the most part these are old political operators that are trying desperately to revive their sway after Trump. I think they'll fail.
What you're asking for is fundamentally impossible within activitypub. You can't have something that's both acting like a hashtag and is moderated by it's "owners." It's better to just realize that certain cream will rise to the top in time and then fall down as it is poorly moderated. Not everybody federates with everybody else.
The app? The website is a dumpster fire. The Algorithm has been really screwed and has 2 day old posts sitting on users front page. The entire content there is garbage so I don't see how you can complain about the content here. Just post what you find interesting.