Did I ever mention my PS2 online stories? Ratchet & Clank 3 online had {[ELITE]} groups with their fancy password-protected rooms. The public ones were a circus with cheats/trainers in play. Ratchet would just explode immediately each spawn. It was disappointing, so I'm glad the single player game was solid on its own.
I think we'll always have online game communities like that. I'm not sure if I would expect more from Nintendo, since it took them until the Switch to implement an account system.
You may have to use that Nintendo Online subscription for something else, like replaying A Link to the Past.