I don't know how you would justify such an observation, I suppose you could also quietly observe a bunch of disabled people in wheelchairs and say to yourself "they don't seem interested in not using wheelchairs" but I'm pretty sure they're very interested in not using wheelchairs.

That's fair, my comment wasn't helpful. I have had a few situations where I had to fix my coworkers' mess and they chalked up their inability to help to having anxiety or feeling vulnerable and I was a bit salty about it.