If you are really arguing that you are inherently more likely to click on the direct link, and it is this click impulse that is used to manipulate you, and that going to a page containing that image plus ads instead is the big negative outcome, then I understand why it is a dark pattern for you.
I did not see that direct link have a higher affordance (that might stretch the term a bit too much) to be clicked on. I still don't – but if you think that there are people that are conditioned to click on those direct links, but would not click on the normal link, then I'll have o give you the point that the heuristically changing of the result page might be a dark pattern for those people.
I'm not aware of that effect, but I can't be sure that for example on reddit for people without adblocker or on mobile for some time the direct link wasn't a positive click signal that conditioned them.
I think that explains why I'm arguing. Dark patterns are a manipulation, and simply showing another page is not something I can count as a manipulation – it is not the same thing as in a window making people click on the wrong button (even though I understand that there is a similarity if you follow a specific line of thinking).