I think what he's saying is unit tests don't add much if you are doing UI type development. It is hard to write unit tests for UIs (web or GUI), so if most of your code is UI code, don't bother.
However, if you are writing a library that will be used by a lot of coders, unit tests are probably indispensable. Otherwise, you would never be able to make even simple architecture or design changes (refactoring).
http://wilshipley.com/blog/2005/09/unit-testing-is-teh-suck-urr.html
I think what he's saying is unit tests don't add much if you are doing UI type development. It is hard to write unit tests for UIs (web or GUI), so if most of your code is UI code, don't bother.
However, if you are writing a library that will be used by a lot of coders, unit tests are probably indispensable. Otherwise, you would never be able to make even simple architecture or design changes (refactoring).