That’s because of the current situation though. People who say it now are like that, so “normal people” don’t say it because it would automatically mean being grouped with them. So only people who don’t care about being labeled as homo/transphobic keep saying that and the “stereotype” reinforces itself.

Or rather, as I said in my first comment, I don’t get why should anyone say they’re proud of being cishet, same as for being proud of the opposite. But we don’t think people in a gay pride parade are being “heterophobic”, it’s seen as a normal thing (by most reasonable people, I mean).

If we look at current society I get the difference in treatment, but from a neutral point of view it’s weird that virtually the same expression, just with sexualities swapped, is seen as either empowering or discriminating.