I find it depends on the game with 1440 and 4K. In tomb raider at 1440 I found the character model looked horrible, whereas at 4K it was pristine. In other games like Doom Eternal I can barely notice and happily play at 1440 120 which is TV gaming Nirvana.Yes I sit only about 3 ft from a 65" and though I can tell the difference between 1080 and 4k I can't tell the difference even that close with 1440 and 4k.
They should take the sweet spot approach and focus on 1440/60