I’ve had online friends I met in games who I’ve remained in contact with for many years well outside of the original game. Some of them I’ve met in real life as well. I’ve also run into many other ‘friend groups’ who hang out in their favorite chat app and jump around between games or other hobbies for whatever fits their mood. It seems common enough to me that it shouldn’t be that rare or difficult for anyone willing to put some effort and trust towards it.