PiHole doesn't block IPs. It blocks DNS. The device have at least three ways to bypass PiHole: use external DNS directly, or pin the phone-home servers' IP addresses, or use some other protocols to carry IP resolution.

I'd just open the TV and yank or desolder the mic out. Or use the TV as a dumb monitor -- don't connect it to WiFi or Ethernet. And use an external Kodi/AppleTV/whatever-rocks-your-viewing-boat