You don't have to read between the lines, the first sentence says more than you probably realized.

"The Value for Value model was conceived by Adam Curry and John C. Dvorak."

They did this on their show, "No Agenda" which has run almost 15 years only on contributions from the audience. They make good money. They also put on a good show. It goes hand-in-hand.

Some people have the luxury to produce a podcast as a hobby, but a high quality product requires significant investment of time, talent, and treasure. Regarding product/market-fit, Podcasting 2.0 enables within the context of value4value data regarding when people boost. Of course in general, they can also tell you in the notes they write. "XYZ happened and I had to send you money."

I find it inappropriate attempting to define a p/m-fit for v4v as a model. Each podcast has it's own market-fit. v4v simply represents the methodology by which the podcast, if a commercial product, earns revenue.