There is at times validity to using some english, but I'm not sure if it's suited for a move like this where you might be trying to target a specific muscle. Probably it should be saved for final reps as opposed to entire set.
I think the heavier weight we lift, the more hip bend is needed to adopt a given angle. Like, when we bend forward, our hips drift back to keep the weight distributed identically over the feet since the upper body comes forward.
So, if the upper body is weighted by a bar, I think the hips need to drift back even further to counter-act that weight, meaning more hip flexion and more hamstring stretch is needed.