Come on.. If I see a URL that ends in JPG, my understanding is that I am about to load an image. If the site then shows me a page full of ads with my image somewhere on there, that's exactly what you described.
The site is tricking me into doing something that is to their benefit and to my detriment. Showing me a URL that looks like a link to an image is absolutely encouraging me to do something. It's telling me "hey click here you'll see the image right away"..
I did not want to see a page full of ads, I wanted to see a single image, but now the site has monetized me without my consent.
It feels like you're arguing for argument's sake here.