Since this is about what happens in humans, not LLMs, it couldn't possibly be evidence of any sort regarding LLMs.

(I think there are overwhelming reasons to think that LLMs don't experience qualia, but this has nothing to do with it.)

Nuts.

You're saying the discovery that humans can process language without being conscious "couldn't possibly" inform the debate about LLMs? When that debate is literal predicated on the assumption that the ability to process language implies consciousness?

This is a counter example to the fundamental assumption of that argument. Without that, you are left with something like "if we ignore their ability to to process language, do we have any reason to suppose that LLMs (as opposed to, say, a spread sheet or stats package) are conscious?"