Respect all opinions

This is such a weird thing to say. I have seen so many people on this site saying, back in the day we minded our business and respected other's opinions. Like no, not all opinions needs to be respected. There are so many instances where your opinions can be counted as offensive. Like saying fetishizing a group of people is ok, gay people shouldn’t get married or the whole super-straight thing. Wouldn’t respecting these shitty opinions make you a piece of shit as well?