None of this should be a surprise to either QF or the Port Authority.
The latter wouldn't invest the money like many other airports had to. But QF knew it.
Considering how long the delivery was delayed, all this was pretty obviously going to happen.
It is not just LAX controllers that don't like this aircraft. The impact on OPS is not insignificant at SY either - esp with no brake cooling fans fitted to some of the aircraft - > long rollout + wake turn + pending departures.
Having said all that, I am sure this kind of thing happened when the 747 1st appeared on the scene.
This thing is flying in to LHR which has a restrictive taxiiway structure as well - I wonder how they handle it? Probably with their normal calm.