Perhaps it is generational, I don't know. I also find it grating and odd for a stranger to assume they can call me by my first name but it seems to be the way things have gone.
When I lived in the US, I noticed that ma'am and sir were used a lot. It did sound disingenuous but has the advantage of avoiding mangling names which aren't pronouncable using English phonetics (such as Welsh and Irish names).
As for titles, it took me a long time to become a Dr and I find it undermining when I'm referred to as Ms or Mrs when my details show I'm a Dr. Once a man is a Dr they don't still refer to him as Mr.
(There's an exception for surgeons www.bmj.com/content/321/7276/1589)
When we go on holiday there's an assumption my husband is the Dr. This happens even when they have our names in front of them. He likes to put them straight (with a laugh and a smile) as he supported me through the exhausting years of training and is proud of my achievements (which is wonderful as my parents didn't see the point in girls being educated after 16). I qualified later in life than usual when we'd saved to afford it.
Bills and businesses change my Dr back to Mrs upteen times. People have been known to chide me as if I should be more proud of being a wife (they'd never do that to a male Dr.) I did no training to be married and don't see it as a career so I think they've missed the point.
When I was travelling alone for work I prefered the ambiguity of Dr. as rightly or wrongly it made me feel a little safer when booking hotels.
Given all the things wrong in the UK (and the world) right now I know my irritations are piffling. However these forums give us the opportunity to focus on tiny aspects of our lives. Some people will ignore posts, some empathise, others sympathise and a few will berate us for daring to voice our thoughts. The way I see it is we get to share our happy moments, woes and advice which that can be good for us in lot of ways.