Because they have not shown that they understand what a good question is, or what the standards are. Or because they presume that they are the ones who should get to say what makes a question good or not.
>you say "that's because we don't close bad questions".
????? I said nothing of the sort.
>other than "we are great".
This, too, is your wording, not mine.
But, again. Show concrete examples in a suitable manner, or there is nothing to discuss.