I quite like that we can engage complete strangers and hear salutations like mate, geez, bro, dude, fella, fam, whatever. If it?s well-intended / non-hostile, what?s the problem. Having to build-up entitlement to be allowed to qualify to call someone ?mate? sounds shite IMO. I don?t like being called sir, although in hospitality envts I allow it as that just seems to be what they do.