I never watched Sheldon, but I get what you mean. I don’t think I’m rude at least I don’t try to be. When I was a kid my dad had to really drill it into my head that small things I do or don’t do are rude. Still don’t get why those things are rude I just do what he told me to do so people don’t get fussy about it.
EDIT: My dumb ass thought you were talking about a show called Young Sheldon not the Big Bang Theory. Then I google Young Sheldon and find out its a Big Bang Theory spin off I’m just sat here “wtf” is all I can really think at this point.
Depends, self diagnosing seems extremely challenging and introduces doubts and bias so it can’t be 100% accurate. Which an outside perspective can help with.
I’ve done [insert] my whole life so it’s normal.
I found out [insert] isn’t normal and common in autism.
I look into autism. Oh but I don’t do all those other things.
Maybe me doing [Insert] is just me being weird but I don’t have autism!
After a few weeks I find out another [insert] that I do is also common in autism. Cycle repeats.