>most movies/TV are still 24Hz aren't they?
They are and that's part of the reason why it matters.
144/24 = 6
120/24 = 5
60/24 = 2.5
TVs compensate by showing you every 2nd image longer causing a slight but noticeable judder effect. Panning shots don't look smooth etc. Much like font kerning once you see it you can't unsee it.
Plus ofc other uses like gaming. And frankly I also didn't want to set up a home theater with half the tech modern, the other half not. A bit like you want your PC screen and GPU to be paired well and not a 1080p screen with a 5090...
My minipc has no issue outputting at 24 or 23.976 or 30 or 29.97 or 59.94 Hz either. And again that big brother series on the smart TV app is going to be garbage quality anyway. It's like setting up a 4k240 OLED and 5090 to run an N64 emulator to play games with a 20 FPS limit and prerendered backgrounds with no texture replacers or anything.
And for "other uses like gaming" you are using an external computer over HDMI, not smart TV apps.
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