Because the classic motion blur is still based off 24fps
If you shoot 60fps, then using the 180° shutter rule you’re looking at 1/120 second which is much darker than 24 (1/48 or 1/50 second).
Also slow motion which was shot at 240fps will now just be 4 times slower rather than 10 times slower.
I think you can do winget install Mozilla.Firefox?