I hope your knee is okay. :)

I'm more concerned about what happens when the central authority disappears. I think everyone has experienced a game being dropped by the studio, and if it's an MMO or something, you could lose valuable items you've purchased even if third party servers exist.

Externalizing transactions means individual servers can decide which transactions (i.e. which central authorities they recognize). So if the game devs act poorly, the community can switch to another authority they prefer. It also gives devs less of a reason to discard transactions between version releases because the community would expect those transactions to remain valid (they are separate from the game after all).

So I think they are a lot of good ways it could be used to players' benefit, but unfortunately it's usually a gimmick or scam.