I did add that rule, which if I remember correctly was needed for it to work at all. But then the problem is input lag. Many recommend https://github.com/hannesmann/gcadapter-oc-kmod which the author only tested in Arch, and for whatever reason it didn't work on Ubuntu. Was printing that "Failed to acquire lock for USB device" line and then I think "Could not reset device", don't remember. Anyway seems like a hack.

This was for Slippi Melee, so even though I'm not super good at the game, the lag was too annoying.