I did read the article and he seems to be under the mis-impression that the Left’s version of “humor” is funny - it’s not. It’s just hateful self-righteousness. The only genuine, sustained humor in the Western world today comes from what is called “alt-right”.
I think he was very clear that the left’s humor is not funny in the examples he used. The media push the line that the left’s humor is ‘hip’ while Republicans are not. That’s the point he was making.