Just because you *personally *don’t find generalisation offensive, doesn’t make them acceptable, far from it. Whether you want to admit it or not, broad generalisation in one way or another do end up effecting an individual (or plenty of individuals), if your boss has this generalised view that all Muslims are extremists, all Pakistanis are fraud, and all women are lazy and all Northerners are uneducated, you may never be considered for promotion or simple contract extention.
Funny you say that negetive generalisation against woman don’t bother you, if it wasn’t for women fighting against those generalisation hundred and so years ago (and still counting), there would be no ‘management’ roles for women to even begin with. The irony in your post is quite sad.