I enjoy the fact there are different styles of commentary for different 'styles' of sport, and found the snowboard slopestyle team pretty enjoyable.
The thing that seems to get overlooked in talking about Aimee's response to the Canadian falling, is that for much of the previous commentary they discussed how friendly the sport is, and how supportive the different competitors are of each other. And Aimee did say very quickly after her whoops of delight (that Jenny had got the bronze), that she wasn't laughing at someone else's misfortune.
And with regard the scoring, they also said several times that as this was a totally new event, no one (not even the judges) really knew how the scoring worked. A couple of times they thought they'd sussed it, but then something inconsistent came up.
I think it's all just personal taste really. Would I want them commentating on Ice Dancing? No. But for snowboarding they made me smile.