Every time this comes up people will shout about how unfairly they've been treated, and sure I've seen questions closed when they shouldn't have been, but often they're closed because they're dups or just homework which could have been found with a dab of googling.
Odd that these complainers never seem to link to a question of theirs to show us an example.
So I'll present my challenge again, to the parent @kstenerud and anyone else, if you say it's happened to you, post a link so we can judge.
[1] One exception, did meet a gatekeeper on a wiki article I questioned, in the end we sorted it out civilly.