Well, I'm not going to worry about your comments. I've used Kodak, Ansco, Fuji and Agfa color films professoinally and personally since the 60s. I've also coated Kodak color films doing R&D. I never got muddy colors and some of the proof is in my gallery. No mud there.
I've also printed on Ciba color material and find the colors garish and untrue to the original unless masked.
And, I have a box of slides and negatives of all of those films, from comparison tests I ran side by side. Talk about mud and then look at some Anscochrome from the 50s or 60s.