I do think people can be much too hard on others about debate etiquette. Don't get me wrong, I think you need to be well-educated on the subject, but it's not hurting anyone if there's an article that's solely a rant or something. Just scroll down. There's no need for hate comments.
Substance over style my friends.
I assume you're talking about formal debates? There isn't much etiquette to expect with informal debates.
There is an etiquette for a reason, unfortunately. If you are shouting at the opposer, mocking them, belittling them, or just simply being unpleasant overall, do you think you are going to effectively get your message across? Of course not. Is it fair if one opponent is interrupting the other, or if one opponent has more time than the other? Again, of course not. Etiquette is the only thing separating formal debate from the youtube comment section. Let's take a moment to appreciate that.
Are people *too* uptight about debate etiquette, and no but I get uptight about English language etiquette.