I can get a 2021 65 inch Samsung qled tv for $1k and it has 100% dci-p3 coverage compared to 90% of the monitor, has HDR and 120Hz refresh rate, has usable speakers, has a good remote to control it and is larger and cheaper. I don’t know the numbers, but I bet the contrast would also be better on the TV.
Does the 4K 120Hz actually work properly? There are a lot of TVs that claim to support 4K 120Hz but actually display the signal at half vertical resolution as 3840x1080.