Social norms seem to cater increasingly to the oversensitive and easily offended; instead of asking oversensitive people to lighten up a bit, we often go out of our way to avoid saying things that will offend people.

You're just asserting that your preferred level of sensitivity is better than other people's higher preferred level. You call them "oversensitive and easily offended", which assigns your preferences an apparently objective or otherwise special status, but you don't give a reason for this. What reason does anyone else have to go along with your preferences instead of their own?