There is nothing inherently wrong with 4K though, other than overzealous morons and their DVNR button. In fact its just like the bad early days of blu ray.
I don’t see any reason to pay a premium for a 4K UHD disc that looks worse than its earlier Blu Ray release for instance. Even if some will say well its graded for HDR and you get a spiffy new Atmos mix.