Interesting that one of his examples, Wordpress, has contributed to lots of software jobs as well. Writing themes, plugins, etc can be fairly lucrative and probably more interesting than making a blog from scratch over and over.

The whole point of writing software is to make it so you don't have to keep doing the same thing over and over. That doesn't mean there aren't new things to do. Software really is eating the world. If we run out of software jobs, it's probably because we've automated literally everything else already.