Does anyone else find it implausible that Apple will offload things like the CPU to the external battery pack like claimed here? The R1 chip surely has to stay

Does anyone else find it implausible that Apple will offload things like the CPU to the external battery pack like claimed here? The R1 chip surely has to stay on the headset to keep their 12 ms latency, and wouldn't there be a similar issue with moving the CPU away and having to serialize a bunch of data back and forth? Presumably for many AR applications, it's important to have similarly low latency to the CPU. I'm really curious if people with this. More likely they will reduce the weight by release a non-pro version without features that most people don't really need (like the external screen). On the other hand, I think the author is overly pessimistic in thinking that no VR headset will be able to replace his dual 6k monitors. In the long term, aren't we headed for VR with the equivalent of a retina display?