I didn't see him peppering his comments with insults. Do you think disagreement and criticism is the same thing as an insult? Besides, the person he was mainly arguing with was being unnecessarily hostile right from the start. If anything, he was the one peppering insults. I don't blame Bytemeister for getting exasperated with that.

How much more altruistic can we expect all the people who don't insult everyone who disagrees with them to be?

Do you... do you believe those people are the norm? If so, I'd love to live in your country because it sounds quite pleasant.