Just to give one example where I consider it ethical: the WSJ doesn't paywall articles if they originate from FB and it's simple to simulate this link. These b

Just to give one example where I consider it ethical: the WSJ doesn't paywall articles if they originate from FB and it's simple to simulate this link. These bypasses aren't "hacking" the sites in any normal sense. They are using publisher-created methods of accessing articles that any person could do if they had enough time and knowledge of the particular side channel. In short, unless the bypass is truly hacking the site (using compromised credentials, e.g.), the argument is altruistic more than moral: "giving as much money as possible to good journalism."