VMAF is super cool, although not the end-all-be-all of video quality measurement for sure. I'm currently evaluating switching over to the new v1.0 models.
The (unsolicited) slop PRs on that repository are a sight to behold, though. The same slopper posted an aggressive response to my PR: https://github.com/Netflix/vmaf/pull/1586
It's a flawed, and unreliable metric. Other metrics like SSIMULACRA2, CVVDP, or Butteraugli are more reliable/accurate and should be used if one cares about quality.
At this point I've accepted that streaming is for the stuff that already doesn't look great (a lot of streaming content frankly), and for the rest there's physical media.