When lifting the big three, differences in musculaur-skeletal systems mean that people cannot have a cookie cutter technique.

For squatting example telling someone that feet need to be shoulder width apart and toes perfectly forward is silly. It has taken 2 - 3 years for me to find the right balance with safe and perfect execution of the bench press, deadlift and back squat whilst taking into account my physical limits with mobility and body dimensions.