I think the Asahi project will release a 4k kernel version for those really need/want it at some point. As I understand there are no technical barriers, they're just delaying it to push more projects into supporting the 16k mode (which has better perf).
>>nicobu+(OP)
I believe 4k pages works with Asahi Linux today. However the CPU can do 4k and 16k pages, the GPU is 16k pages only. So you give up accelerated 3D to run 4k pages.