I wondered the same thing, I just figured they were whitelisted by the paywalled sites but I don't know exactly why. Perhaps archive.today has accounts to these

I wondered the same thing, I just figured they were whitelisted by the paywalled sites but I don't know exactly why. Perhaps archive.today has accounts to these paywalled sites although I am not sure that's the case. There is another site, 12ft.io, that used to bypass many of these site's paywalls but they got pushback and now longer offer bypass for sites like WSJ and NYT.