There is a big difference between saying that our current model is "deeply wrong" and saying that our current model might be superseded by a later model which e

There is a big difference between saying that our current model is "deeply wrong" and saying that our current model might be superseded by a later model which encompasses the current observations. Therefore the major assumptions of the current cosmology are not likely to be "deeply wrong" anymore than Newton's theory of gravity was "deeply wrong" just because it was superseded by general relativity. I do believe that our current understanding of cosmology has hardly scratched the surface of describing how things really are. However, any future model is not going to invalidate current observations, but rather, better explain them.