I get that talking on the phone is quite scary as well and it took me a while to conquer that. Is it the same as talking on the camera? It's a good thing you're doing gameplays and recording yourself at the same time, that helps a lot!
A diagnosis can make or break you, and as long as you are able to manage them without it then you should be good. Sometimes people don't want to give labels to the problem... and that's okay!
I think it is similar. But for now I stopped making let's plays- no one watches them but uploading videos takes very long time. So my last gaming posts only had some screenshots from the game but no video.
I don't think that getting diagnosis changed much for me. But perhaps it did bring some clarity.