Guy I trained under in 2019 said never trust a guy who won't let you touch the offset, and a new hire just proved him right | CNC Operators - nhfree.com
The offset thing is about the part of the vid that shows the movement, not the whole rig. Cable drive systems use one, and if a trainer won't let you see those numbers or change them, it's because the numbers are doing the work instead of the lifter. That's why the rule holds up.