GP did not specify that their thought was scoped to the same people as GGP's (explicitly dystopian) scenario, so I read their comment as working on the kernel of the idea and not the horrifying class-based discriminatory version.
While I am still confident of that assessment, I'll grant you that "obvious" charitable interpretation is not as reliable as it should be. :-/
The GP's statement wasn't for universal sharing. It was to force recipients of taxpayer money to share their medical records.
It's a gross demand: Force poor and old people to reveal their medical conditions to the world.