I can’t even tell most of you people apart.
Have you ever considered maybe that’s the point? Maybe people want to be judged for what they say instead of what image they had on hand when they signed up?
I uploaded a pic while playing with all the shiny features over here, but I was faceless on reddit for years after their introduction of profile pics, because I was there to have discussions, not build a profile. And the one I picked here? It tells you almost nothing about me unless you already know the character in the image, which only people who have a similar niche interest might.
This is like whining about women who don’t wear makeup, because “If you have the option why not just snazzy it up with a couple of images tiny bit of eyeshadow. I think it’s shows a bit of personality.” Sometimes the active decision not to bother with cosmetic features IS the personality you’re looking for.
The key word is “disorder” though.
Everyone experiences anxiety from time to time, just like everyone has minor bouts of depression or invasive compulsions. Some non-disordered might even still experience them often.
Not everyone experiences these feelings pervasively to a degree it prevents them from socioeconomic success (making friends, going outside, finding and keeping a job, etc).