I don't really get this, shouldn't this be a budget feature for cheap GPUs to cheat at rendering? If you buy an expensive GPU, why would you be interested in fake frames?
even worse, the fact that they gatekeep it with the 4000 series for no good reason just goes to show that they turned from hardware maker to designer of walled gardens.
i think it's way cooler how half a year ago i was able to use a mod for cyberpunk 2077 and mesa's amazing gpu code to run ray tracing and fsr frame gen together on RDNA1 - which lacks hardware ray tracing acceleration, and at a time where cyberpunk didn't have fsr3.