Addiction is a precursor to poverty. If we accept the domino theory of "online advertising -> addictive design" then the fundamental evil becomes clear. Holding people in poverty in order to profit from their time and attention.
We also live in an area where outdoor ads are banned (which tends to be the case in wealthy areas IME), and I block ads on our computers, so we rarely encounter them. Consumerism is gauche.
Lets say I'm reading a laptop review. Show me adds from the laptop manufacturer or of websites that sell said laptop. People reading the review are likely in the market for a laptop so it makes sense to show it. At most you could probably narrow it down to the country so a German doesn't get shown a Best Buy ad but thats as far as I would go.
Is another area needing new legislation. Changes to copyright, interoperability requirements and such, we can change more than one parameter
I think it's fundamentally anti-competitive.