Yes but that was not the point (thanks for confirming what I said but there are a lot more examples, not only U2). The point is maybe that we tend to define facts and reality on just our own horizon, needs and experiences and claim things that we have no clue of, just because we've never experienced those needs and applications. But others who have and who also have found the solutions for themselves and for others with the same needs, know better...maybe? So: YES, we "need" good fx in an "all in one unit", CK agreed on that 12 years ago. Good that he did.
I can agree with what you are saying. I see it a lot when discussing high end guitars vs budget guitars, digital units such as Kemper and Fractal, sound boards, etc.. You don't know until you know. Once you have had an experience and learned from it you can more easily hear when someone else doesn't have the experience by what they say.