Okay, I have now seen a couple of these. The OP asks a question, apparently seeking input from people on the forum. The question is vague or general, or seems incomplete (like there is additional context that is not stated). People respond, sometimes trying to give an answer, sometimes asking for additional information, sometimes questioning the accuracy/validity of the original question, etc. The OP then responds by telling those responding that they have it wrong, and that their answer is somehow inappropriate. I find this annoying, and it makes me far less likely to try to answer questions from one of these posters.
If you are tempted to engage in this "No, not that rock, that rock is not the right one, bring me another rock" activity, here are my thoughts/suggestions:
1) There are members on here with a lot of experience, and they are used to seeing questions where the OP has not thought of something, or is working from bad information, or is making a false assumption, or has not provided enough information. By asking questions, those members are usually trying to figure out how to give a good answer to the original question. Don't be insulted, or tell them that their question is stupid or inappropriate.
2) Yes, you will get some answers that are unhelpful, sometimes annoyingly so. Example - you announce that you hate Yamaha horns, and ask for recommendations for a NEW tenor, and invariably someone will tell you to just get a used YTS-23. Just ignore these answers (unless you think the person has just missed something, and you really want an answer from them, in which case you can politely re-ask them the question with a clarification).
3) There are a wide variety of people on this forum, with a wide variety of experiences and perspectives, some of which will differ from your own. I find that there are some people whose stuff I consistently like (Pete Thomas, JayePDX, bandmommy, Sigmund451 come to mind), there are a few I find annoying or dislike, and there are some who sometimes I don't like but who will also sometimes provide really valuable advice. It is hard to know exactly who likes/respects who, but if I see you dissing someone that I like/respect, I will have less respect for you, and I will be less likely to try to help you. So again, if you don't like someone's answer, just ignore it. Take the good stuff, ignore the bad stuff, and think about the stuff that is coming from a different perspective.
4) While some people may participate here primarily for commercial reasons, I think most people (even those with commercial interests) are on this forum because they want to be part of a community. This is a social network. As with any community, don't be a jerk, don't put people down.