I stopped counting the times people have insisted that the issue is not related to X only to find out later that yes, X was the reason they were having the issue.
Usually when interfacing with people that are trying to help you, you listen to what they have to say, look into what they ask you to do, and report it back out. Even if it doesn't fix the issue, it reduces something they see as not correct. It also can give them more insight into your issue.
Asking for help, then completely ignoring what a QA person is asking you to check, even claiming they are wrong....what do you want them to do? At least Jugginator didn't go into a rant about you, they just face palmed.
When I go to the experts (and yes Jugginator is one of the experts who can try to help you out), I listen to what they say and do what they tell me. Even I don't think that is causing the issue, I too want to eliminate that as a possibility.