Well it is “a way of launching offline minecraft from a premium laucher” so it might be relevant

If you have a legitimite minecraft account, you can use multimc (and probably prism) to launch a game in offline mode (and choose a custom name). This works for example if you want to play with a friend in a lan world.

Well, technically it was a race condition. Just one between two different programs.

https://xkcd.com/1138/