Many, many people have ankle mobility issues to the point where its more common to have them then not have them.
Many, many people have a hard time ‘sitting back’ when squatting.
By simply elevating your heels or the heels of the people you work with, can clean both of these issues up really fast.
As a result, I am a firm believer that everyone should be squatting, with their heels elevated to give them the needed ankle mobility and allow them to sit back better.
Truth be told, I don’t recall working with anyone who doesn’t squat better with their heels elevated.