I've had nothing but pleasant experiences with QF - reasonable points availability on busy routes, able to accommodate reasonable change requests, friendly and personal (but not over the top) service, and the few times there have been issues (flight changes or cancellations, or me missing check in due to my own tardiness) they've handled things very well.
I get that people have different experiences, and that travelling can be inherently stressful, but the claim that QF treats its passengers poorly doesn't gel with me.