There is a world of difference between cautioning someone that they may offend someone else and telling someone what they can/can’t do because they believe someone else will be offended.
The first is a warning that the person should check with the potentially offended party.
The second is telling someone how they should behave based on their own sensibilities, not the sensibilities of the person they are talking to nor those of the potentially offended person. It is also being offended on behalf of someone else, which is telling that other person what they should be offended about.
There is a world of difference between cautioning someone that they may offend someone else and telling someone what they can/can’t do because they believe someone else will be offended.
The first is a warning that the person should check with the potentially offended party.
The second is telling someone how they should behave based on their own sensibilities, not the sensibilities of the person they are talking to nor those of the potentially offended person. It is also being offended on behalf of someone else, which is telling that other person what they should be offended about.