Some of it is that SO has gamified shitting on and suppressing the question/asker instead of gamified providing the answer, and built a culture of toxicity that tolerates the abuse of the tools in this fashion.
And when the CEO asked them to tone it down maybe 5 years ago they basically did a collective “am I so out of touch? no, it’s the askers who are wrong”. Extremely funny to read the meta responses to that at the time.
https://stackoverflow.blog/2018/04/26/stack-overflow-isnt-ve...
https://news.ycombinator.com/item?id=16934942
(admittedly "women and people who don't speak english well are particularly unlikely to adopt to the pedantic neckbeard culture we've built" is a spicy take for your average SO'er, or wikipedian, but it's also not actually a wrong one either. SO's culture problems probably do disproportionately chase away users with marginal engagement, nobody likes putting up with formalized neckbeard culture.)