One of my larger concerns about using TVs as monitors is security - its important to remember that these devices are not just displays. ACR / Automated Content recognition means that they are also capable network connected framegrabbers and analysers.
If you connect the network to also use it as a TV, if you don't also tick all the right "I do not give you permission" boxes ( and the firmware actually respects these choices ), then your TV will be uploading signatures of everything you watch ( including HDMI inputs ) to the TV manufacturer for them to sell on to advertisers, political parties etc.
While I believe the normal mode of operation is just to upload some kind of image signature / hash, I doubt there is anything that technically or legally stops screenshots being uploaded for "additional analysis".
Note that this is incredibly lucrative for the manufacturers, so their incentives are minimally aligned with protecting our privacy or security here.
https://boingboing.net/2021/11/18/tv-manufacturer-makes-more...