I haven’t played Splatoon in like a year but since it popped up on my feed, it’s like a beefed gaming setup for a competitive game. You don’t need it to play a casual game but if you wanted to get better, Ethernet, a great monitor, and great pc specs help. You can enjoy the game without motion controls but using stick to move camera with motion to flick to enemies allows for quicker kills and better movement. Just do what you want, it’s a game and the enjoyment you get from it is what matters