This feels like an argument on the wrong level of abstraction. Even if the methodology is at fault, it seems silly to say "Waterfall is the problem." That's sim

This feels like an argument on the wrong level of abstraction. Even if the methodology is at fault, it seems silly to say "Waterfall is the problem." That's simply too large of a point to make. You could say that you fell behind during development and couldn't tell that you were falling behind, so the problem snowballed. That's specific enough for people to discuss without resorting to politics. Otherwise you're taking the organization's dysfunctions head-on, which is a losing battle.