I ran Wireshark to capture traffic from my LG C5 and the only "scanning" it did was SSDP. Did they post any written article with further information on what it's doing? Most if not all of what was detailed in the video can be opted out of;
https://www.pocket-lint.com/i-stopped-my-lg-tv-from-spying-on-me-by-adjusting-these-settings/