I always squat hamstrings to calves but it requires, not just good form but also, good ankle and hip flexibility. I definitely wouldn’t say that everyone should squat that deep but I would say you should squat as deep as your form allows. And most people would probably benefit from being able to squat deeper. This to me is the difference between flexibility and mobility. A lot of people are flexible enough to get in a deepish squat, but not many can push weight from that position.