As someone who first encountered rotator cuff issues in the mid-70s, I'd say that looks like a good recipe for problems for those predisposed to weakness there. The weight's too heavy which is causing some swinging = further stress on the joints, and the ROMs i see there add further unnecessary duress.
It's not about "strengthening" rotators, rather the idea's good preventative maintenance involving effective general warmups that aren't inherently stressful on the joints coupled with minimal weight and avoidance of particular problem exercises and bouncing heavy weights. Provide ample protection against injury through good warmups using very little resistance and lots of stretching and movement.