That's a good example of one of his points that's way off base.

For one, WP is always trying to improve the WYSIWYG experience, but if you're not happy just look at all the alternatives available for free in the plugin repository http://wordpress.org/extend/plugins/tags/wysiwyg - some with very high adoption and ratings.

You could even integrate with markdown if you wanted http://wordpress.org/extend/plugins/tags/markdown - what other CMS has these kinds of options in the writing experience?