There is an argument saying that questions based on false premise should be closed*. An example question of that argument is "How's X helpful?"**. According to the argument, that question is based on a false premise because X couldn't be helpful in everything.
I don't agree with it, since having a false premise is natural when we don't know much about a thing. Even professional researchers can base their studies on false premises. A false premise doesn't make the question off-topic or unclear. A false premise question is a good question since we can learn a lot from it, and deserved an answer to correct it.
But that's my though. What do you think?
*with the reason "unclear what you're asking". But that's another topic.
**and example of that example is Why are flash cards effective in learning a language?