I don't have enough knowledge about the exact technical details behind the Switch's DRM, so I can't really say. Modern DRM involves multiple layers of cryptography, which makes it difficult to reason around unless you know exactly how it works.

If they win this one, I guarantee that workaround won't be feasible for future consoles. Nintendo could simply make on-the-fly ROM decryption part of the Switch 2/3 firmware to make it impossible to fully decrypt without actually running the game.