These TVs can capture and identify 7,200 images per hour, or approximately two every second. The data is then used for content recommendations and ad targeting, which is a huge business; advertisers spent an estimated $18.6 billion on smart TV ads in 2022, according to market research firm eMarketer.
The trouble is you can’t find decent sized monitor panels at reasonable prices. Frankly your most practical bet is to buy a TV with minimal smart functions and never connect it, then use that for your media PC. Also maybe hack the TV, that should be far more common IMO.