Kind of the opposite. I had heard of it happening, so looked for evidence, and found that HN post asking for evidence, with that random post seemingly the only bit supplied.
Shouldn't be hard to honeypot your TV into doing that - just set up a network and check if the TV connects to it, or set up sniffing at the gateway and see if there's any traffic that seems unaccounted for (as in not coming from your set-top box and suspiciously large for the periodic software update checks).
