It's very unclear to me wether hidpi makes the non-subpixel rendering bearable or wether the rendering would still be better if it exploited subpixel antialiasi

It's very unclear to me wether hidpi makes the non-subpixel rendering bearable or wether the rendering would still be better if it exploited subpixel antialiasing on 4K, it's just that the perceived difference is smaller and good enough. I don't know.