I would agree, but for slightly different reasons. I squat with a very high bar, oly style, and recently widened my stance a few inches and am SO happy I did it. Take a look at your first and second rep especially... out of the hole you'll notice a tiny bit of your hips shooting up, and your chest pitching forward a little bit. This kept happening to me, and at big weights I just felt like my back was being loaded SO much because I kept pitching forward just the tiniest bit out of the bottom of the rep.
Then I figured out... the reason was because I literally could not fit in the hole, because my stance was so narrow. So I was trying to drive my knees forward and keep my hips under me instead of sitting back, but my stance was so narrow that, as I broke parallel, I couldn't fit so my hips would come back and my chest would pitch forward, making the whole movement feel a little disjointed.
I kind of figured this out, widened my stance by maybe 2 inches each foot, and felt absolutely amazing. Instead of loading my back, I was able to actually keep a higher bar position, keep my torso upright, move faster into/out of the hole, AND I felt like I was able to use both my quads and my hips really effectively TOGETHER - while I was narrower, the squat was either mostly quads, or mostly hip if my form broke down.
But other than widening your stance, squats look great. Awesome depth, clearly you have great flexibility