Meta is free to license Llama from Meta under a different license are they not?

Yes, but the post gives that as an example of what follows the license. So even if it's not illegal because nvidia has a different license, it doesn't follow as a good example.

Yeah, basically what I'm saying is that we can't even guarantee that it's an attempt at compliance with this specific license because it's a major corporation that may want to use the software under a different license negotiated privately.