You are 10 years too late for that concern. I often wonder if there are any real people commenting, submitting, or upvoting left on Reddit.
Reddit works when it isn't a competition, but advertising has made it a competition with a profit motive.
You need to stick to the topic oriented subreddits. r/homelab for example.
That said, a paid reddit would be a ghost town. It's against the spirit of the site.
Users: Now if I want good results, I append site:news.ycombinator.com before every query.
Advertisers: Hmmm...
Ditto for wikipedia and wikitionary, which are hopefully immune to advertising..