The purpose of science is to generate correct beliefs about the world. If you believe in nonsense, that's very poor scientific work.
Belief A has no rational basis. Belief B has a rational basis. If you believe A yet have proven B, that doesn't make B wrong. Even if believe that it was A which led you to the discovery.
>If you believe A yet have proven B, that doesn't make B wrong.
It makes you wrong. All the time you spend as a proponent for A is wasted.
I agree that it's better not to waste your time believing A if you can avoid it.
Non sequitur. What you believe is separated from your work. Just like when you were a kid and your math homework had nothing to do with the fact that you believed wrestling was real.