I agree, the assertion that you shouldn't test is absurd. For example, TDD can save you time by catching bugs for you. When Iv'e worked on apps without tests, I have to test manually each time I make a build, which gets annoying. That's time I could spend coding. I think the solution is something in the middle ground. TDD can sometimes veer off into a time wasting effort for the sake of TDD. Just TDD the complex parts, or the ones that are likely to break. Also write the tests that are easy, or quick to write.
