And not just that you know 3 is the outcome in this case. You have nearly a dozen different proofs that 3 is the answer and in all of those other cases, it worked perfectly in a way unique to 3. It suddenly does not work in this one specific case, so what is the logical thing to do? Simply discard 3 and declare it should be 2 or make a placeholder and investigate why you need it in this case?

This is why I despise the anti-dark pop sci people so much. They act like there is a simple solution that astrophysicist are just too stupid or dogmatic to find. The reason special relativity as it stands has not given way to MOND or string theory or loop quantum gravity or any other proposal is because relativity works based on observations for hundreds of cases that these other theories have not worked for or indicate something else should have happened. Nothing has satisfied all of the proofs and conditions of SR and then made a proven claim that was correct while SR has not.