I know it’s a bit difficult, coming from your bubble and all but most things people do are not related to their sexuality but personality. If you saw a hetero guy or gal post selfies like that you would also not think of them being hetero as the reason why they do this but because they like this pose / think they look cute like that.
This is an unconscious bias. It takes some time to rewire your brain. But I see you are willing to and that’s already the best start.
I guess the down votes come from people who don’t agree with the point that Germany is too stable at the moment for Nazis to regain power. And I agree. It’s naive to think like that.
The political climate is very tense and some people like to play with fire as long as they feel like they could personally benefit from this. E.g. conservative and right wing politicians imported the culture war from US as good as they could and thus additionally supported partys like AfD and BSW by validating and inflating their nonsense talking points.
Hey, das kenn ich! Aber von drinnen, der gute Spatz. Jetzt fühl ich mich alt :D