[Iaks]

I think you are misrepresenting this.

I clicked on a news announcement for a product that I currently know very little about and this will be my first engagement with ANYTHING they have published. Would their impression on me be better if I get a giant white screen, or if I get a note saying that their page requires javascript?

Regardless of my engagement with the product, it is certainly a bad assumption to say that everyone blocking javascript is not a potential customer.