Soldato
It's really not - there's been some great AAA games, even as recently as this summer (Space Marine and Black Myth: Wukong) - it's really specific games people have a problem with. Lets use this game for example - it's a OK game, it's certain not half as bad as people make out. But the hate machine is in full swing and people are almost blinded by it - at least Neil gave it a go for a couple of hours.
I thought that neither Space Marine nor Black Myth were AAA games? I've not played either but I remember most of the reports at the time referring to them as more indie titles. They certainly did not have AAA budgets.
A lot of the discussion as to the state of AAA gaming at the moment compares the success of games from the indy sector.