Hadn't heard of "basic TV mode" but it seems to be a feature of any Google TV device made in the last year or two. They say it will disable all smart tv features and leave only the HDMI inputs and antenna input.

https://arstechnica.com/gadgets/2021/02/the-best-feature-of-...

https://support.google.com/googletv/answer/10408998?hl=en