This guy's rant includes a bunch of things that aren't true. Just to pick the first two I noticed: initial proof-of-concept code doesn't usually get thrown away, and TDD doesn't say you shouldn't change tests when you find out they were wrong. In other words he's guilty of the same overzealous generalization that makes TDD cultism annoying in the first place. I get the feeling he had a bad experience on a project or two and turned that into adamant universal opposition.

Edit: I think the people who oversold TDD in the first place ought to have known better, though. Either they believed their own silver-bulletism or they cynically computed that it was the only way to push something in the corporate software world. I'm not sure which is worse.