Davey CroppetI don't know about Australia but in many parts of the world, including the UK, that is the proper title.
Using Captain in a social context would be OTT but in a professional/business context it is absolutely correct.
Unnecessary (or false) modesty plays into their hands of employers who, for their own financial motives, try to diminish the status of professional pilots. If professional pilots describe themselves as "just glorified bus drivers", that's how they will be treated. That attitude may well be part of the reason why many pilots are underpaid.
Professional pilots are entitled to be proud of the qualification they have achieved and IMHO should be proud of it.
I wouldn't dream of using such a title
That's your choice; it doesn't mean professional pilots who take a different view are "jerks."
Your criticism of, and offensive comments about, those who are proud of their profession says more about you than them.
Since you ask (and to use an expression of yours) -
When I read your post, my immediate reaction was: What a jerk.
Then, on reflection, I thought perhaps you're not really a jerk and either you'd had too much too drink before posting or were simply trying to provoke a reaction.
.