I hate it and so did my mum which must be where I got it from.
I never used to call my real aunts and uncles anything but their first names.
With non relations I was told to use first names if they didn't mind, or Mrs or Mr if they preferred that.
My mum also used to tell me I didn't have to kiss people I didn't want to.
People soon learned not to demand a kiss because constant rejection often offended . They deserved it imo:I hate people who expect be able to paw children.
I did have to be polite, mind.
And another thing, the term Aunty makes my toes curl with tweeness. It's Aunt or nothing.
I don't tell my SIL, who likes her DCs to call me Aunty Tallulahbelly, because she thinks it's polite and it would be rude to object.
I'm from common stock btw but we were encouraged from a young age to scramble above our station whenever possible.