I know the answer, the ones that reject current models have been there and discard them for their inadequateness.
Just one example why current models are garbage. The metric of space denoted as "g" or more complex as gij..is kept "constant/linear" to allow the usage of simplistic models for gauging. Gauging means you don't know the physics the experiment will tell you...
Unluckily dense matter exactly shows the contrary effect. The space metric "g" changes in a non linear way for each added rotation to a mass. This cold be found even by a 12 year old that looks at tabulated nuclear data.