Hindsight and all that; there are always[sic] people who blame [prior person] for [current problem] all the time (insert blanket statement here)
Impressionable baby techbros here on HN still quote them on that stuff, so the consequences of their multiple fuckups haven't finished playing out yet.
"Hindsight" would be recognizing "oh shit, I'm a fucking idiot and I didn't realize it." But they haven't actually reached that level of hindsight yet.
Essentially, Matt Stone and Trey Parker are enthusiastic heralds of the idiocracy.