I am not saying it is a base component of the game, I am referring to the original statement that seemed to indicate this was something Larian just thought up and created. Critical failure for even skill checks have been around LONG before Larian was a glimmer in Swen's eye. In fact the concept of critical skill failure has been in the DnD mindset for so long that there are long standing and common jokes about it. Go looking for something and it is sitting next to you all the time, "Well looks like a Nat 1 on that perception check, critical fail."

I will agree it is not a "standard" rule but it is one I always felt was a good rule to use.