Why anyone would want a public record? I think you mean why would anyone want to share their purchase history?
If the record existed it would obviously be a gold mine, many people, [foreign] governments and faceless corporations would be all over it, they would be uncovering all kinds of things we couldn't have imagined and most likely didn't want to share and/or have terrible implications.
The conspiracy theorist in me would think that this effectively non-news is being planted / spread simply to piss Putin off and see how he reacts to it.
If anything 'weird' happens to these astronauts after this mission, that's his reaction.
Update: classic HN to downvote something like this