There's the obvious "if you're a homophobe, transphobe, racist, abelist" etc etc etc. Like obviously that makes me lose respect for people.
But I think if you judge someone for doing something that you deem "weird". I used to so that until I learned that like, hey we're all fucking weird. Who cares.
You don't actually have to take a photo of yourself. If you're quick enough you can just move the front facing camera to take a photo of the ceiling.
That's what I do on days I don't want to take a photo of myself.