I dunno if there's anything to "self diagnosis chambers." I can only speak to my experience.

I'm an adult woman with late diagnosed ADHD. I became belligerent when diagnosed 4 years ago and refused to believe it (skipping ahead in the story) and now I hang out in ADHD spaces online because it's always helpful to feel like you're not alone. And because women tend to present with inattentive type, and largely went undiagnosed as children (since our suffering tends to be less disruptive and thus, easy to ignore).

You read like a neurotypical coming into our space like you're welcome and lecturing people who have a learning disability like anybody asked. Buzz off.