I have found this a problem in real life too - people often assume that when you are asking for help you are asking for them to become a strategic partner that is going to shape your overall approach to the problem.
For example, getting someone at work with some free time to pitch in on a minor presentation aspect of a major project, where decisions have been made over a long period of consultation and trial and error, I have been told all sorts of things about "it would be better if we did this..."
I guess people are trying to be helpful, but cynically I think it also comes from overestimating their importance and assuming because you asked for help it must be at a project steering level and not just to get through a minor bind.
Think about it this way.
They know something that you don't and you're in a position asking them for help. Engaging them as a partner in your solution creates buy in from them. And really they are actually a partner in your solution now.
Their extra information, thoughts and ideas, may all be useless but letting them say that is the cost of not having to RTFM for yourself.
For example, getting someone at work with some free time to pitch in on a minor presentation aspect of a major project, where decisions have been made over a long period of consultation and trial and error, I have been told all sorts of things about "it would be better if we did this..."
I guess people are trying to be helpful, but cynically I think it also comes from overestimating their importance and assuming because you asked for help it must be at a project steering level and not just to get through a minor bind.