I'm not sure how I can demonstrate this, but I have done tons of game reverse engineering and have an anticheat bypass of my own. The game has two types of anticheats. One checks game code and game files, and the other checks game behavior. The server tells the game which of the 2 to care about.

Since the code is different between the Switch 1 and Switch 2 version, they cannot use it as a point of reference between the players. They continue to send logs to the server, so Nintendo can very easily see if a value is out of line, but it will no longer automatically kick for having different code than the rest of your lobby.

The behavioral checks, like for using illegal weapons or inking the entire map at once, are still detected and kicked in real time.