[sailfast]

Agreed, provided one is not so aggressive at preventing the questions you list that you effectively chill the environment for questions out of fear subsequent questions are “the bad ones”.

That for sure is a much worse outcome than the occasional “really?” kind of question. Some simple nudges to colleagues as checks (did you do the reading? Did you try to answer it yourself first?) before asking questions to keep things productive, for example, might be a good starting point rather than a Potentially more hostile approach that could frustrate well-meaning questioners.