I think this article is agreeing with you. It's saying that it's not an "intelligence" failure in the traditional "military intelligence" sense of the word we expect, but rather it's an "intelligence" failure in "runaway idiocy" sense.

then they should have called it a "mental faculties" failure.

this is an attempt to make it look like the CIA or NSA fucked up, when we know damn well they knew Iran had been prepping to fight the US for decades.

this is a Presidential failure, or more likely, a Presidential Advisor failure. and "failure" in the sense that Stephen Miller or Steve Bannon have been pushing for this since day 1.

there is a reason no president ever decided to take a go at them until now, and we're seeing why