eddiee > you can’t say that since people would be insulted the halacha changes.
halochos ben adam l’havero definitely depend on the havero. Saying something that insults or offends the person depends, in part, if the person is insulted. You can’t tell him that you would not be insulted and, thus, you can say it. It is his sensitivity that matters. And sensitivities change between people, also between cultures, and between centuries.
I heard about 2 identical stories of a bochur saying out of turn “there is no tachanun today”. In pre-WW2 Europe, the gabbay “kindly” asked everyone to stay to the side and invited the bochur to the front row as the “new Rebbe” to teach him a lesson. In Israel, R Ouerbach whispered to the gabbay “skip the tachanun” …