Let me repeat.....it's not worth it and I'll add, consumers and even experts within the field, are down on 8K having any sort of widespread adoption in the foreseeable future. Also, again, you have to have screen sizes that are huge to notice any difference between 4K and 8K and that's not going to change.
Nobody doubts that it's beautiful, but there is little to no incentive to push support for 8K 60 when the number of people that would actually be able to take advantage of it could be counted on two hands.