767s are a great aircraft but most of Qfs are around 25 years old.
We don't have any that are 25 years old. We got OGA in '88 (30 Aug according to the docs) so it's just turned 22. OGV we got in 2000. First 13 aircraft arrived from 88 to '92. The rest of them turned up from '94 to 2000.
It would have been great had the 787s arrived on time!
I suspect there is a bit of 'tall poppy syndrome' with QF. It's routinely ranked highly on world standards and the feedback from those that fly is generally high. I suspect sometimes that the criticism often comes from those who haven't flown with us for quite a while.