For the same reason that you can't state that someone is lying without denigrating their character, you cannot point out that someone is representing an utterly amoral position without implying that they are a generally untrustworthy human being.
Let me put it this way: would you be comfortable having cookiecaper running HR for your company? I should hope not. But if you were, what would you tell a board member who came across a post like this an wanted to know why - exactly - a guy this demonstrably off-base was being allowed to fill a position that carried so much risk?
For what it's worth, people were just downvoting the guy. I think there's some value in seeing what he has to say in order to better understand that mindset that let to the moral implosion we're presently discussing.
Separately, I think the tone of condemnation is actually very important. I'm sure there are plenty of people here who have had damaging encounters with others who think and act like cookiecaper (e.g. anyone who has worked under Catmull). It's important to establish, in a very public fashion, that the values he displays are absolutely not okay.