This is one of those gray areas.
Sure, you see You Tube videos where people squat ’till they touch the ground ‘ but your clients may not have that ROM. Keep in mind the clientele you have, their medical history (knee) and their form.
It’s not great if someone squats down to the ground but rounds their back or exhibits ‘butt wink’.
(Of course, the person should squat properly before weights are used or squat depth level is increased!)
Everybody may not be able to deep squat.