It seemed pretty repetitive to me. It seemed to be saying "don't insult people" over and over again. Yes, there are lots of different ways of insulting people, but is it useful to address all of them individually? I doubt it (CMV). Maybe repetition is a good way of getting the general principle across, though.

The two exceptions are the first item "Come on strong and hard with contradictory evidence and a combative tone" and "Whine about goalposts." The text of the first item mixes in the topic of insults, but also talks about other things. But it didn't say much. I think elaborating on that topic would have been more useful. But the negative framing excludes positive advice. Indeed, I think the article should be seen more as moderation rules than practical advice.