those are some low numbers. between corporate, state, and anonymous shills and trolls, I wholly believe at least 50% of all reddit content is paid for or manipulative for agenda based groups. the sheer number of repetitve posts with repetitve comments constantly being on the front page is pure propaganda. Of course I rmemebr back in the old days when the reddit feed was in (almost) real time where you couldliterally wait every 10 minutes and refresh for an almost completely new front page. Now it's all about repetivie agendas and narratives operating in cycles to manipulate public opinions. the same lame post will sit on the front page for entire days.
I'd say there is a huge amount of bots, then the smart bots, then the actual shills. The smarter ones run complex operations and are able to use their own power to self propel their own stories. And there are a lot of similar 'power users' who are not wholly paid for by someone but would do work for the highest bidder.
I'd bet that yes, 50% of what's on the front page of major things is reputation management or Hail Corporate stuff, then I'd wager the mostly less popular stuff is actual people, with a ton of bad posts from all sides at the low popularity