Their whole gaming business model now is encouraging devs to stick features that have no hope of rendering quickly in order to sell this new frame generation rubbish.
Because it’s not a good way to get from 30fps to 60. It’s a way to go from 60 to 120 (and 240 on the new 50x0 series) where you won’t notice the extra latency.
Most 30fps games on consoles have a 60 fps setting anyway, that turns off the extra graphical wankery and tones the resolution down a touch.