I'm not convinced that is the whole point of the powered processing unit.
Although people have been saying this since it was first announced, it's not a passthrough box by any measure at all and there is no mention of it being such a thing in any of the documentation they've released. It is, in Sony's own words, a "processing unit" that runs on an external power brick and it's there to process the signal rather than be a passive box that connects two cables together.
Clearly, people can decide to do what ever they want to try and do with the processing unit but I am genuinely surprised that other people are wanting to leave it and it's external power brick on when it's completely redundant as they're not using it for anything.
EDIT:
TClarify, I know the information that this whole thread is about mentions pass through. What I'm attempting to suggest is that this is new, this is not something that has ever been marketed as a passive passthrough box, only as an external processor so expecting it to do what a passive passthrough box does and then being disappointed when it doesn't because that isn't what it is, doesn't make any sense to me.