Those quotes all came after the discoveries of the Ediacaran fauna, long after. Therefore the effects of it on the theory of evolution had had plenty of time for researching if those discoveries solved the problem (for evolution) of the Cambrian explosion. They did not. Also the long passage at the start is quite recent, only a few years old and it shows again that the problems have not been solved.
As I stated a in my post, the problem of the Cambrian is insoluble for evolutionists. They cannot possibly show the descent of all those vastly different phyla from what came before. Worse of all, the Cambrian fauna appear fully formed. There is nothing like an intermediate to be found to anything that came before it. This is very strong proof against evolution. If that were not enough, there has not been a single new animal phyla that arose since the Cambrian. If evolution were to be true one would expect that in so many millions of years at least a few would have arisen.
Now it's time for the evolutionists here to show how this vast diversity arose from so little that preceded it, how the few predecessor species gradually transformed themselves into the vast multiplicity we see in the Cambrian. Evolutionists have been trying to do so for 150 years without success.