That seems non obvious, the most upvoted comments are just as likely to be memes or jokes than in-depth research, and even if they are that may not correlate to a good mod very much at all.
Re:Reddit raises $410M in new funding
by spicybright on Thursday August 12, 2021 @07:23PM
(#28163018)
You can see this in action on ANY subreddit by sorting by "Top of all time". Almost every post is either some in-joke or meme, some random brigade that happened from a sudden temporary influx of users, etc. for at least the first 10 posts.
Wouldn't this just turn reddit into a spam site?
Only really works for the in-depth subreddits, I guess it's not going to get you far on image or other media-based subreddits...