Every question is moderated by volunteers, who have curated every high value question there. From an askers perspective, sure you may have asked 1 slightly off-topic question, but for a reviewer, that’s the 30th off-topic question today - and SO gamifies reviewing so you are encouraged to do so.
I used to be on StackOverflow and had high enough rep to access nearly all of the moderation tools. The quantity of garbage that gets submitted daily is astounding. And when your contribution to the community of high quality content is keep quality up you get tired of saying “hey can you please add more code” for the 100th time and just hit dupe. Because if the asker isn’t trying, why should you?
Ultimately, this leads every reviewer to become an asshole, because to keep up with the quantity of rash coming in you need to be.