Could it be both “it seems like you’re doing something insane and terrible and I will act accordingly” and “it probably also seems that way to many other people, and my silence would look like an approval, so I need to distance myself from you visibly (instead of just ignoring you)”?
One thing is “I don’t trust you anymore” and the other thing is “you are burning social capital, so I am building a firewall between you and me”.
An explosion will kill you, but you can’t predict where the individual parts of your body will end up.