No, I don't think that's true.
Depends on what your version of "good quality" is, and well I guess dark eggs too.
It is true it is said that many have thrown out form in favor of egg color. For me, egg color is a factor. But I also strive to reach the other standards. And they need to be hardy, no split wing or comb sprigs. Correct feather color/pattern. Correct shank and eye color. Good body size. Good shape (something I am still learning how to have an eye for). And good attitude. Consistent layers without extreme broodiness but still good mothers who recover quickly from molt. Who are vibrant, confident, full of energy, predator aware, avid foragers! I currently get 4 & 5 easily and will continue to strive for the best all around.
Guess if your talking 8-9 maybe.
I am content knowing my birds are pretty awesome and lay a good color for their breed and I get to keep learning genetic crud to fill my brain with in order to work on improving what I already have, instead of focusing on drama and other unproductive things in life.
I even get to share good quality birds with some people!