Not sure where you think I was 'defending what wasn't attacked', so I think you misconstrued my point. I made no 'gratuitous' shot at PDAF. Me thinks you are a bit sensitive at times.
Actually AF lock works fine for moving objects that move laterally or away from the camera if they start out at even moderate distances, with a typical DOF, when shooting outdoors. I agree if the subject is moving toward the camera and aperture is moderately wide, that can be an issue with AF lock. However most of my subject material either moves laterally or doesn't move much at all. With that said, I've used AF lock at the zoo where animals are surely not stationary, and haven't experienced many issues. For those in which the subject moves toward the camera, tracking AF, although not perfect, has not been a significant issue. Would I like to see improvements in tracking AF? Sure. I felt the same way about my A7Rii and A6300. Interestingly, although not having PDAF, I did not find the AF differences significant, between the RX10III and my 2 prior Sonys.
I'm guessing, based on what I've read, the upcoming GH5 firmware update will improve its tracking AF. We shall see.
As for Sony & 4K60p, who knows, it may take a new Sony camcorder like the Canon, to finally bring that to reality.