I feel the same way regarding whether this legislation would be enforceable or good, but there are a lot of ways developers could make this work that they currently don’t. That includes bot players, local multiplayer functionality, dedicated server tools, IP-based connections, etc. Many DRM and anti-cheat implementations also cause problems and would need to be either removed or only used in certain contexts.
Right now in a lot of games if you aren’t playing multiplayer on official servers through official matchmaking functions with invasive kernel-level anti-cheat there’s no other way to play, but that hasn’t always been the case nor does it need to be the case.