I agree with your posts Monica. Over sensitivity can be the legacy of a less than desirable child hood or indeed trauma experienced at any time in some one's life.
I can see how the terminology can be offensive to someone perceived as being over sensitive, whose 'over sensitivity, is due to their previous experiences and therefore IMO an understandable reaction. I was trying to think of a word that might be less offensive but words such as increased don't sound much better.
I can also relate to what you described as "over sensitivity being a ploy that is an essential part of passive aggressive behaviour", which is where I think the term 'the tyranny of sensitivity' comes from.
In the lead up to our estrangement, our ES's wife would complain that I had been cool toward her, snubbed her in the street, hung up the 'phone while she was still talking to me and on one social occasion, ignored her the entire evening and sat with my back toward her. At that time she was just 3 months pregnant with our first GC.
I know that these things were said because to begin with our ES would either tell me and on one occasion one was said in front if me and he made light of it, knowing that particular incident along with the others being out of character.
She was hurt that we didn't send her a mothers day card the first year she was a mother. I didn't know such cards were available and admit I never looked as it simply didn't occur to me to send her one.
To think that London, or anywhere else for that matter, does not belong to any one demographic