Would be fine for a personal filter but if used globally would incentivize karma gaming. You can get high karma from reposts of past popular submissions (an author who was in prison who reached the front page even half-joked/resented once how many common Wikipedia articles land on the front page for the nth time).

Have you taken a look at reddit recently? It's absolutely infested with bots farming karma, either by reposting old popular posts, or simply posting AI generated comments.

Actively encouraging this will only make things worse.

You want other people to deal with the things you don't like and filter stuff for you, to improve your own experience and shield you from the filthy masses. God beware you have to endure a comment you don't like, your royal highness.

I'd rather see you gone than the people you complain about.