Fair enough, I did not realize there was a different concept called that in trademark law.

I still don't understand why you think it's absurd that he would assert such a defense, though. The article you linked clearly states that nominative use is actually encouraged by US trademark law. It seems a no brainer that you'd be able to specify the platform that your product works with.

The main problem here is that the author has created a product, which is harmful to the company in question whilst using their trademark. Generally courts don't like that.