It matters because the topic refuses to stay buried (say, when brought up as an example of a controversial figure's purported views), and the prospect of it not

It matters because the topic refuses to stay buried (say, when brought up as an example of a controversial figure's purported views), and the prospect of it not being a closed question invites bad actors to rationalize social inequity, and their own tainted views and actions, through its lens. This is a topic where a conscientious person should have an idea of its correctness and should stake that claim firmly. Best of all, doing so eliminates one's part in the harm of its nature as an infohazard.