Nobody will ever make enough money from voluntary donations to have a proper career except for a handful of popular creators. In the real world, whenever donations are mission critical they are accompanied by fundraising, which is time spent procuring donations. Content creators don't have the time or resources as individuals to do that kind of marketing. Fundraising is a lot of work.

Relying on donations is an abysmal prospect for anyone trying to make a career from creating content. Many, many talented people on established platforms outside of nostr aren't making enough money to have a proper career. Doing it on nostr right now is even more difficult.

I think going all in on V4V is naively optimistic. The reality is that content creators need an array of tools to monetize their content and being dogmatic about V4V is not productive. It's frankly discouraging to anyone who hopes to monetize their craft, because it's totally unrealistic. It's silly to talk about how the theoretical price of digital content is zero because people today still buy shows on digital platforms instead of pirating them. Maybe answer why people still do that and you'll start to see that there are other factors you aren't considering.