I think the self-diagnosis should be kept to oneself instead of telling others.

I have CF and I’m a cancer survivor with a few issues here and there from chemotherapy after effects, including some PTSD from treatment, it has made my life often difficult and I find it invalidating when people diagnose themselves with some random illness they found online based on a few symptoms. Sure, if you think you might have the flu or something, totally tell people and whatnot, but telling people you have autism or another condition when you don’t have a diagnosis isn’t valid, and those who say they don’t want ableist doctors clearly haven’t realized they can just… switch doctors if they want to.