this is a great idea, because on twitter/x a vast amount of time is wasted like this so people think they're getting attention when they're in fact just wasting their time, that's why i think they allow the bots and trolls because their model is based on you using twitter/x over all other apps. rather that a hardcore focus on free speech which alone solves many real world problems
also have you thought of allowing people to pay to promote posts? and allowing people to filter out paid promoted posts if they want to? or maybe something where you pay only when someone reposts so the community decides if your ad is worth others seeing? so pay to create an ad then have a catalog of ads you can chose to repost to earn but you limit how much one user can see the ad so you don't endlessly see the same ad. also you could test for human interaction so money only changes hands to verified humans or accounts with zap balances, there is lots you can do like this in my opinion