I don't understand, as that appears to be a downswing piece. Where's the whole video? We're talking about your backswing.
You don't turn your hips much, or extend your right (trail) knee very much. 5SK doesn't teach a squat in the backswing… if anything, we've written about each of these countless times:
trail knee extends
right hip raises, rotates, and does not move closer to the "wall"
torso turns 80° or so by A3 in most good players
We have a down-the-line view of several PGA Tour golfers at the top of the backswing in our training manual showing these things, kind of the opposite of a squat.
Any "squatting" we'd ever teach anyone would be in the downswing. The trail knee goes from mostly extended back to its address bend at around A5-A6, but not any more than that. The lead knee stays flexed and helps the hips slide forward a bit.
We will be outside of Orlando with my wife's family for Thanksgiving. When Black Friday hits, my wife and I will be up early enjoying a nice breakfast before heading over to a course that is close by for a 9 AM tee time. I will be spending Black Friday on the course, hopefully with a bloody mary or two. Now if only I could get my wife to play golf and not just ride along, but small steps, see what she thinks about being out on a course.