because qualia are fundamentally a subjective phenomena, and there is no concievable way to arrive at subjective phenomena via objective physical quantitites/measurements.
Having done some quick reading, I can see that qualia are definitionally subjective, but I would question how anyone could assert that they possess internal mental experiences that "no amount of purely physical information includes.", or that such a thing can even exist with any level of confidence. Certainly not enough confidence to structure an argument around. The justification seems to be the idea that because we cannot do something now, that thing cannot be done. I don't find that convincing.
This might be going too far into the analogy, but I think the problem with a comparison to a radio is that if you examine the radio down to its smallest part, and then assemble a second radio, that radio will behave in the same as the first.
Presumably as well, with enough examination, it would come to be understood that the voices coming from the radio are produced somewhere else, and there would be no reason for anyone to think that the voices themselves are appearing from an intangible and inherently subjective origin. If consciousness is essentially a puppeteer for the physical human body, that doesn't preclude consciousness existing physically somewhere else, and that the "broadcaster" isn't something capable of examination or imitation.
The whole argument seems to boil down to "maybe consciousness doesn't work the way science would currently suggest it does." but doesn't present any evidence that the consciousness is somehow unsolvable.
but to assume causal relationship is intellectually lazy.
Instead, assuming that an undetectable intangible and fundamentally improvable mechanism is behind consciousness without proof is worse than lazy, it's magical thinking. While I don't think you could ever prove that that wasn't the case, it should only seriously be entertained once every other option has been thoroughly exhausted.
(Reading this back, this feels quite confrontational. I don't intend it to be, but I lack the ability to word it in the tone that I would prefer.)