Well, it seems to me you're trying to have it both ways.
Does advertising cause people to spend more than they would otherwise, or not?
If it does, then eliminating advertising would reduce spending which is what causes a recession.
If it doesn't, then what's all the fuss about?
Recessions in North America (can't speak for any other context unfortunately) have ended due to concerted efforts to get people to spend more: lowering interest rates mostly, forgiving debts, and political leaders outright telling people that their patriotic duty was to go out there and shop.
Looking around the world, it seems to me that many recessions didn't, in fact, end. Instead, their economies imploded entirely.
That's not a risk I'm interested in taking, personally. But you do, you rebel you.