Comments, downvotes. The fact that your question is receiving votes for closure in itself is an indication
Those "people in power" are not only equipped with means to vote to close or delete questions, but are also more experienced, generally speaking, than those who don't posses such power
Just to clarify, it's not an "ivory tower" type of thing, but rather "an expert is more equipped to build you a house than a random person from the street"
and you probably wouldn't like for your house to collapse
Things shouldn't be gauged by how useful they are, since usually you either form opinion that something is useful, or you simply stop caring. But for something to be not useful is to cross a certain line of whats allowed, and that line is a red flag. So I think that things should be gauged by how much they are considered to be not useful
Its easy to upvote without reason but hard to downvote without reason.