Is he going to persuade someone who does not have TDS to get it? No way. He's way too over the top for that.
But may he persuade some other people with TDS to oppose wokery? And does the fact that he has severe TDS give him more credibility to do that? Yes.
So on net balance, he's a force for the good.
"the kind of people who listen to SH would probably not be open to any real dissident thought to begin with."
This supports the argument I was making that Sam Harris is not a net positive but rather a net negative.
He pushes normies to turn more authoritarian and more inclined to trust in technocracy.
He is a net negative on society.