I believe there is a place for advertising/marketing whenever there is economic activity - however, the thing we know as online advertising is a different beast than traditional advertising - it has become a sophisticated tracking and surveillance apparatus.
This style of “advertising” has no place on nostr or anywhere else in my opinion. It seems v4v stands as a response to that more than the simple act of selling space on podcast or website.
As such, I think there is room yet to explore what works across different scenarios, but fingerprinting users and forming centralized predictive models of behavior is antithetical to everything we are doing here.