The second law of motion isn’t true because it was discovered by Isaac Newton, it’s simply true. Newton merely described it.
The fact that he spent most of his time doing alchemy and looking for magic doesn’t impact the truth of what he discovered.
There’s a chasm between science, where the identity of the discoverer doesn’t matter, and culture, where, “because he said so,” is a factor in our beliefs.
The reputation of a jazz musician, or a comedian or a political leader can influence whether or not we think the work is any good. And it can even cause us to change our mind once we discover something about its originator.