Here you give a very good example of the scientific method as applied to the theory of evolution at work. Individual scientists may not agree with the accepted methods of the theory, and when given scientific reasons for doing so are not derided or laughed at, but their ideas are accepted by many as possibilities.
Notice that none of these scientists are rejecting evolution theory, just arguing about its mechanisms. Science at work, it's lovely, as opposed to "The Bible says so, end of discussion."
No, they are arguing about the theory itself. The theory that Darwin posited. That evolution occurs gradually. The theories of Gould and Kirmura have just as many problems as those of Darwin but different ones. Gradual evolution is the foundation of Darwinism and it has been totally blown out even by its friends - thanks to as I mentioned when this discussion started Mendelian genetics.