I am in total agreement with this. One minor point is that there needs to be room for differences of opinion and subjective view, even with the "bad questions".
Regarding
Don’t answer questions that are not fully formed/adequately explained. We often see users, even experienced/high reputation users answering questions that are not fully formed.
I've seen a couple questions where a user has asked a question, and gotten feedback like "Not sure what you're asking", when the question was crystal clear as I understood it.
I've also seen a few where I just didn't get it until I read someone elses answer, and then the question suddenly made sense. It can go both ways, but we shouldn't just let our own ignorance lead us to jump to the conclusion that a question is bad.
Maybe try to seek clarification before jumping on the close button, even if it's just asking in chat if anyone else can explain it better.
We have to remember that there are people here from all over the world, and who's primary language is not english. Getting the wording right might be hard for someone with a high concept question and limited vocabulary.