Hmmm...I think you are used to very nice in-person manners.

Online sites tend to feel...less intimate & actually personal in the friendly social way you mention.

I don't think people are intentionally rude; most would probably be surprised bc they do NOT want to be rude to nice ppl (like the one you see in the mirror 😊)...

I have fallen asleep trying to stay in a conversation which I believe is important to the other person...not intentionally rude, just not able to stay awake. lol

Sorry...