I think the idea is that people feel that news sources can't be trusted in general so don't want to pay for access to a "news" article in particular. The idea of the registry is then to represent social validation by a community incentivised by their own selfish best interests (ie the token would appreciate hence they can resell for a profit...) to be accurate and judicious about their curation efforts.
The paywall tech could be something like what SpankChain is doing for cams, for instance. Technically it's an interface that allows token holders to sign a message to access a content URI by placing the tokens in a state-channel contract. If the consumer does "enter" the site, the tokens are deduced, otherwise they remain available for future use. Users should be able to pay with fiat but behind the scenes the balance would still be kept in tokens for the payment infrastructure to remain trustless.
(caveat: I'm speculating on a solution that doesn't exist yet and I'm not involved in building)