Yeah, there wouldn’t be any options to swap left/right movement on a Gamecube. Back then you were lucky if a game had more than a handful of settings at all. It would be interesting to try on a system that allows it. I also wonder if you just practiced it enough if your brain would adjust. Sort of like that deal with the reversed controls on a bicycle that Tom Scott(?) did a video about a while back.
Y’all need some outside hobbies.