Setting/measuring what's considered harmful is (or should be) society's job (with the help of journalism).

I don't see it very critical when society puts pressure on an organization to fire a high-profile leader (and decision maker!) who publicly does something harmful. But I do acknowledge that this could generate a dangerous dynamic if spun in the wrong direction. It's a tradeoff: Either you allow cancel culture or you allow bad actors in powerful/influental positions.