I honestly don’t hear about people having hand problems just because they’re using a GameCube controller. A lot of it is them playing the same game for hours upon hours. I’ve been playing GameCube stuff for over 20 years and I don’t have any hand problems because of it.If the Joy Con's were around in the Gamecube age then I'd still use Joy Cons. Like wavedashing feels like a hand workout while playing Melee. There's a reason people get problems with their hands holding this controller much more so trying to press the buttons in proper order. I should know because my sibling prefers Gamecube even if he doesn't play competitively.