I'm not saying the consumer is helped.
I'm saying that all businesses aim to make money, so the fact that this one is doesn't make it morally wrong.
Further you've ascribed some price we 'should' be paying. There's no such thing, and you can't even say that prices would be lower without it. Tobacco companies haven't lowered prices in countries where advertising is banned.
>To make things worse, the consumer is nudged into buying more stuff and thus contributing to global overconsumption
A. Surely the consumer would have bought something else? Although gambling advertising is popular...
B. You are now contradicting yourself. You made the claim that advertising was essentially an economic dead weight. Now you're saying it contributes to over consumption. If advertising only puts up prices, that means we can buy less things than we would be able to.
C. This is assuming only bad things are advertised.
In summary. You're trying to make a quasi economic argument against advertising that isn't really correct. I have my own issues with advertising, so I'm not particularly defending it. But that doesn't excuse making up an argument that doesn't make much sense.