Dude, Chinese labs distil attack via the APIs, if Musk wanted to do something like that, technically he could. Legally it would be a giant slam dunk liability though
What I suggested is to steal the (possibly intermediate) weight in between by sniffing the network communication bus, which means MITM for getting the exact values. Or unless it turns out OpenAI or Anthropic leveraged homomorphic encryption, or I'm not certain how is Anthropic would safely allow Mythos to run on AWS without their control.