You shouldn't be special-casing the ads that pay for the pages you visit. All of the tech behind the page is equally good or bad in this sense.
Just because someone tries to give you an advertising flyer as you walk by, doesn't mean you should take it.
That doesn't mean there isn't by the OP's logic a moral imperative to not look at that content, due to the environmental impact. My point is that same imperative should apply equally.
> Just because someone tries to give you an advertising flyer as you walk by, doesn't mean you should take it.
That's a bad analogy, unless someone holding a flyer out pays for a service you consumed.
Are you obligated to actually read the booklet? Or is "no thanks" OK?
But here you seem to be claiming it's ok to visit the event without reading their ad booklet. That's inconsistent.