I'm glad to hear that Bloomberg is still talking about this - there was a point where it looked like they were just going to wait for it to fade away.

If it's real, it really shouldn't be that hard to prove conclusively - find the chip, scan it, dump what's in it. The technical parts are possible but not that plausible - not just the manufacturer but large internet companies with the right expertise were sceptical, and most of the people who thought it was genuine seemed to be non-technical. E.g. "had a chip encrypted on the motherboard" does not inspire confidence that this is someone who knows what they're talking about.