Interesting. When you first meet a non titled person do you refer to them as Mr, Mrs or Ms until they say "Do call me Fred/Freda"? It's exactly the same thing. Granted I am ancient but I was brought up to call everybody by their correct name, whether titled or not because it's polite. Refusing to call somebody by their correct name could have been seen as extremely rude, particularly if they were older than me.
When I first meet someone and they tell me their name, its usually their forename. I think its been years since someone told me to call them Mr or Mrs xyz.
Mr and Mrs is fine to me, I'm used to calling parents of friends Mr and Mrs xyz depending on their generation. I worked with a gentleman and I called him Mr x every day of the week, I couldn't call him by his forename as it just seemed odd to me.
If someone introduced themselves to me as "I'm Lord sugar" I would not use their name at all when talking to them.
I don't hold truck with lord this or baroness that.
I was once asked to call a priest and to refer to him as father. I refused. I said that he wasn't my father and I wasn't calling anyone by that name. Either I used his proper name or nothing at all.
Titles to me are for people who see themselves as higher or better than those around them. It's 2024 and there's no need for it.
Sir and madam or Mr and Mrs is different to me as they are used daily and don't imply that someone is of a higher status than me and my family.