They clearly have absolutely no interest in serving me content or helping me do what I want to do
... coming from the site owner side of things, I'll offer a friendly counter argument (which has been rephrased in light of down votes): site owners are interested in serving you content, or helping you do what you want to do ... just in a better way.
I agree ads or prompts can be annoying, but to say site owners go through the trouble of developing a mobile app and advertising it b/c they have no interest in serving content or helping the user experience doesn't quite fit. To me, a site that offers a mobile app says the exact opposite.