Me? I'm not made of money but have an LG c7. Yes it only has HDMI 2.0 but this happily supports 40K 60fps (and just about supports 8K 24/30) HDMI 2.1 offers no value to me as currently.
4K is just about becoming mainstream now with some cheaper sets costing around £300 so 4K 60fps should be the golden standard for the next few years - if not the life cycle of the new console(s) as rumoured to be 2 different boxes a lite product and a more premium/ultimate version.
Looking at the RTings page while the C7 is a native 120hz panel it only supports 4k at upto 60hz and 4:4:4, it doesnt support 120hz 4k, (it is however a very good TV for the money and one of the ones i considered but I was worried about OLED burn in have you had any issues with that?)
Its very rare in current TVs to have support for 4k120hz and even VRR is pretty rare.
Now by the time Scarlet is out then it maybe more common but its still early adopter and enthusiasts only. However 4k60hz TV should be as you say the standard.