The vast majority is scrolling and blowing air out their nose, maybe voting, maybe very occasionally leaving a comment. From a monetization sense, it may look tempting to focus on retaining that passive minority, but what risks happening is a dead sea effect where it enters a cycle of contributors leaving because contributions are deteriorating in quality. That can be nearly impossible to reverse.
[1] https://jennchen.com/blog/business/were-all-lurkers/
[2] https://www.researchgate.net/publication/222436334_The_Top_F...
[3] https://publikationen.bibliothek.kit.edu/1000129213/10112828...