For now. I wouldn't surprised that if enough people start doing this, they'll just put a cheap cellular modem in the TV. Or find open access points. Or make a deal with Amazon and others to exfiltrate information via a smart home speaker/assistant.

Technical solutions only go so far, at some point you have to put in place a regulatory framework that requires consent. The divergences between US-EU privacy policies, configuration screens, etc. show that the GDPR is slowly starting to do its work.