Sometimes the OP thinks the question is perfectly clear but it actually doesn’t make that much sense. And when you question them they feel annoyed because they think you have reading conprehention problem. Sometimes the OP actually just wants confirmation, and when you don’t give them what they want they get pissed off.
And there is no guarantee that you can get them to understand what you’re getting at.
Sometimes, you just have to accept that some people just don’t see things the way you do and there’s no way you can change it.
Trying to change people rarely works. There is no best way to get clarification other than trying to push further and hope for the best. I try to make my question as clear as possible and be on the lookout for further questions for clarification, that’s all I can do on my part to help save people from frustration.