

My argument is that if he hasn’t spoken out on Gaza, if he hasn’t urged people to do what he thinks would be the best way to stop the genocide, then he is either a fool who can’t see what is in front of him or a moral coward who can’t act on his convictions.
Either way it makes him a poor ethics philosopher. We can be pretty sure that unless he himself is an experienced life guard, he would in fact not dive in to the river to save the child.
Does moral cowardice matter in someone teaching about ethics? Yes, just as much as physical cowardice matters for a life guard. (The other way is fine.)
Does he express his ideas and teachings as something that it would be good if people did, but he totally wouldn’t if it causes himself a smidgen of inconvenience? If he didn’t, we now know that he was lying. Which matters if your moral framework cares about truth.
If you have to read his works for some reason, do it with open eyes and try to figure out who and what he is lying in service of.