>” Would consumers spend less money? No...”
I’m not sure about that. A lot of advertising is about appearances and superficial things. Example. Do we need cars in the US to get from place to place (NYC, etc excepted) Yes! Does it have to have bells and whistles? No. Can an entry level car do the job in the great majority of cases? Does it have to be a “luxury” brand? Or an upscale model?
Spending would go down. Good, bad? That’s another discussion.