The mid 2000's was all about creating impressive engines that in some ways wouldn't be matched for a long time.
Personally I've wanted to buy Far Cry 2 for a while because it's kind of the awkward middle child, you always hear about how weird the first game is and how great 3 is and how repetitive 4 onwards is but 2 is rarely talked about. It looks a lot more realistic which is really appealing, but people seem to think it's kind of mediocre.
Anyways, there's some important context that is always taken out of most of Crowbcat's videos :
"How FC2 holds up 10 years later. FC5 has its own attention to details that FC2 doesn't have, this comparison doesn't mean FC5 has nothing to show."
He's not really trying to be a dick for no reason.