Yes, some do, some don't. But I think the main difficulty is that you are trying to apply a technique "statically", i.e. uke is just standing there waiting for you to execute the technique. This is what we call "learning mode". Unfortunately, there has to be some level of cooperation from uke when in this mode. So uke must react to a *fake* atemi to the face, as if you were really intending to hit. Unfortunately, most people (black belts included) just stand there and blink at you - expecting you to hurt them and therefore *make* them move. We call this "practice mode", where you already know the basic technical movement and are practicing on your timing and execution.
Ideally, you'd want to get to "training mode", where you both know the technique and can feel the instant either of you resist, change direction, or change attack. This means that uke is attacking properly, and prepared to either take the ukemi or execute a counter, or reverse the technique.
Never get these 3 modes confused.