That is actually very interesting. I was wondering how Pocket (or any readitlater service) could operate if that was the case. I did this mostly for myself so didn't think about it much
This, on the other hand, is a public facing open website. This is like reciting newspaper article over the radio so nobody has to buy the newspaper.
Pocket adds to my readers numbers, and locks them in. This service does the opposite for me. So it would be harder to tolerate the missing ad views.