Where do you get the should from?

If that is indeed QF customer service training and being misapplied then fair enough. Can you validate such?

Otherwise, some may favour the formality of a title and others rather a simple christian name (I happen to be in the latter camp).

FWIW I just looked at a couple of boarding passes from some recent QF flights: on one, Ms Platy title was printed and on the other it was not.

And the question remains of why the passenger refers to a ticket rather than a boarding pass.

Those with a attachment to their title might be better off on VA rather than QF since the booking system accommodates twice as many options!

Neither QF nor VA booking system would enable a government minister or the PM to enjoy the correct salutation ("Minister" or "PM") with the risk of great offence to their right honorablenesses. Similarly a priest would be left potentially verbally defrocked at having no opportunity to add a father or padre! A Lord would have to slob it in titular homogeneity with lessor folk on both airlines.

Now a cobber with a knighthood would be in a very difficult position - the title "sir" can be added to a VA booking but not one on QF, but even once added then the surname doesn't; apply - rather the christian name. Ooops!

And if travelling on AA the original passenger would be right up the creek since the AA booking system doesn't appear to include the option of the DR salutation at all.

For that matter, the QF FF system doesn't seem to enable a self serve change in title, so a good thing I never finished my own PhD to find that I was forever cast as plain old Mr with the airline therefore discriminating against my superior academic status.

IMHO...just call me by my christian name - the implied lesser class and lower status of crew is implicitly demeaning and having to use a title and surname while serving you when their own titles aren't even included on their name badges is oh so upper class Tory twit nonsense...

FWIW I tend to enjoy flights more if there is a relaxed (yet professional) approach from the cabin crew (often far more important than the hard and soft product when the airline products are so similar these days - the crew have the capacity to make the flight): over formality is tiresome. But hey, others may prefer that - that's fine...but it is essentially a derivative of status and / or ego!