there are those who don't suffer, perhaps other than the craving
for smoke.
I hope you can understand that what you see in front of you may not
be necessary true. A person training with bad form for a long time
may have a good figure and not been injured before. Does that mean
it is good?
What you have said is what you have observed. Sure, both you and I
may agree that there's nothing wrong with squatting deeper.
However, it is not enough to convince some of the people here by
merely stating your observation. Afterall, this forum's direction
is to help others by clearing their doubts, while at the same time,
influencing others to adopt a healthier lifestyle. The basic thing
to do so would be to throw better arguments into their face, not
just state what you have observed.