We never watch terrestrial TV any more. It's Netflix, Amazon, or my Plex server. Occasionally iPlayer. I have an AV amp and an Apple TV. The Apple UI beats the crap out of Sony's. So I ended up wondering if you can remove the so-called "smart" features from the smart telly and make it just a telly ? Like they used to be ? Then I realised that's exactly what a monitor is

Ebay, close to home, £300 for a 55" 4k display if collecting in person:
https://www.ebay.co.uk/itm/295743094748
Or an 86" touchscreen for just under £800 if I wanted to really annoy the wife just before Christmas:
https://www.ebay.co.uk/itm/285559366246
So what's the downside ? Not bright enough ? Too blurry ? I'm not going to buy anything in the near future but when the Sony dies I'd certainly be interested in non-smart options.