It's not an actual talk or a spoof. It's probably best described as a farce because he's using a lot of irony to make his points. I guess you could call it sarcasm.

I think he's wrong as well. Often non-technical managers assume that since something is simple to describe, it will be simple to implement. This is the tech talk equivalent of that attitude.

Also, there are CMSs and WYSIWYG webpage creators that operate at various levels of success. Markup languages and stylesheets coexist partly because they meet different use cases. For example, I've never heard of a spec for a WYSIWYG "language", so you're guaranteed to have to deal with vendor lock-in and a lack of portability unless you can then generate some text documents in a standardized language.