Sure, and WoW ships with a file that directs you to the official servers, that you can change to any IP address.
Besides all that I’m simply explaining the companies position. If you want to pirate the game feel free. If you want to allow “offline” accounts to join your server, feel free to do that too.
Axolotl_cpp@feddit.it 23 hours ago
The official minecraft client jar has an option to disable authentication with mojang servers too btw
Rekorse@sh.itjust.works 11 hours ago
Sure, but theres a wide range of usage for an unnoficial minecraft server. Some servers make quite a lot of money via gambling mechanics.
The main reason Mojang or Minecraft care is because they need to protect the games image as a safe thing for kids to play. If it was a mature rated game, none of this would even matter.