I tried asking a legitimate question before on SO about physics education and it got shut down because it wasn't a question with a definitive answer. What non-trivial question has straightforward answers? It's just a homework help site. No serious discussion is allowed.
The point of asking a question on stack exchange is to create a question answer pair as the whole goal of stack exchange is to create a repository of high quality question answer pairs. If it's not possible to select an answer to a question then it isn't a relevant question for stack exchange.
Why would anyone other than undergraduate students spend their time on such a site