Because it effects those around him and the business itself. Especially women who are already disadvantaged by inequalities in tech. You can take the your view

Because it effects those around him and the business itself. Especially women who are already disadvantaged by inequalities in tech. You can take the your viewpoint to the extreme to prove a point: yeah that Himmler guy knows how to engineer and plan. all that matters right? One's actions affect others, and even disregarding the (evidently not agreed upon fact) that we should actively be combating racism, misogyny, discrimination etc, it's bad for business when one persons behavior makes other employees less productive, less likely to work for your company in the first place, less likely for customers to buy, or open the company to liability or settling a suit since they now have reports of his behavior.