Waffling ahead
I am on a couple of Hawaiian visitor forums. So many people are complaining about various airlines non stop. For example Hawaiian Airlines has just cancelled Florida to HNL ongoing due to covid and post covid issues . So Qantas is not alone
However Qantas does seem to be having more issues than expected. My flight home last month from Hawaii was 90mins arriving back in Sydney.
At the few international trips I have looked at for the next twelve months over various airlines, Qantas isn't a good selection price wise. There do appear to be airlines that do the same route at better prices (no one is that great at the moment admittedly)
I won't get to LTG so I think trying to attain that by travelling with Qantas by paying thousands more is a waste of money. As someone else said it will be Best Fare of the Day