I think Jolie Bookspan was saying you should not stick your butt out, though, when squatting, but rather tuck lightly and squat more vertically.

Originally, when I tried Face the Wall squats, I mistakenly tucked my tail after viewing some chilel. qi gong site, and my sacroiliac flared up big-time. Stick out the butt a la Pavel and going only to parallel doesn’t aggravate the SI. I understand Jolie’s concept, but can’t imagine applying it when lifting anything other than feather weights.

Regarding the Healthline.com article on squatting, I am afraid it is simplistic in that it only considers the problem of excessive anterior tilt and hyperlordosis.

The truth is few people will actually have this problem when squatting with the instruction “stick your butt out,” for most people that instruction will help prevent tail tucking due to tight hamstrings and dormant glutes.

You do see this anterior tilt at the hips with young, athletic women though, especially if they have some gymnastics background. Look at some of the women squatting on crossfit.com for some examples.