It seems a part of this may be to learn to distinguish between those who want others to "challenge" ( I don't really think this is the most accurate term, but I can't think of any other that would not piss someone else off unintentionally) them and those who do not. And, in my experience, it is not as easy as just having an OP state what they want. Another is that there can be a huge difference in types of delivery of the same message.
It seems no more productive to me to have posters come back to thread where they are frustrated by the OP and keep doing the thing that the OP does not respond to and which frustrates the other poster even more.