They are not failing to see it, they are refusing to see it.
There is no excuse left whatsoever for these clowns. The evidence is overwhelming. They are completely wrong, and have been since day one. The fundamental problems with their 'science' and the claims based on it, and the harms resulting from it, have been comprehensively exposed, and they still cannot admit it and change paths.
The real question now is how are they able to keep getting away with it? Why are they and their claims so protected? What is it about what these people are offering that is so special and important that it cannot be allowed to fail, no matter how obvious and costly and cruel that failure and the denial and coverup are?