Not exactly, you can have an less then average reaction time and still track targets just fine as soon as you focus on it. For the same reason that people can play rhythm games with inputs that go as low as 15ms window.
In other words, you may “predict” information as you expect something happening at a certain speed and direction. Without a high FPS, an fast moving target that changes direction can be seen as multiple images instead of a single blur that gives you an “average” of its most updated image.
There’s no point to discuss this since I already made an entire thread talking about this subject Blizzard PLEASE add an Motion Blur option on the engine