Thinking about, the timing doesn't make much sense at 8NM either, and I'm not talking about the device being dated for 2024.
If we are indeed talking about an 8NM chip closely related to Orin, then the SoC would have been tapped out and ready for manufacturing about two years now, if not three, and Nintendo has been sitting on it. Yes, that could happen, but then the rollout would have been much smoother. Nintendo would have ample time to decide on final power profile, as well as RAM setup. Dev kits would been plentiful and ready to go for quite some time. Important studios like Activision would have known the final specs probably by the end of 2022, if not earlier. The Matrix demo would have been running on finalized hardware rather than "target specs".