Yes the economist is arguing that. Most of the rights of this sort were granted under the assumption that most people eligible for the rights would not be able to actually get them. If they can get them, that will be extremely inconvenient for politicians who will have to deal with a large deficit, by either cutting back rights or raising taxes on the wealthy, both of which are career suicide for a politician.
A tacit agreement that while people _should_ have these rights, they all can't have them.