When I was in schoola classmate set up an instance that is designed for hacking. But another classmate took it in another direction. Instead of following the clues to the answer (it's a game) they instead hacked the instance and created a folder bomb but named the folders with the Mongolian space separator character. So removing them because a task. No body got upset because well... Hacking can be fun!
Second: hacking is the term used when you break into something to make it better.
Cracking is the term used when you break into things for malicious intent

It's not that bad though, lemmy is worse but at least with relays misskey and Mastadon etc are easier to aggregate a starting list of content