100%. I had seen videos that "debunk" that arrow speed has any reflection on animal movement. When you actually break down FPS to animal movement it is clear that speed will help. Yes, bow noise and arrow noise matters too. But FPS absolutely matters.On the topic of arrow flight....
It's interesting to think for example, that an animal that has a reaction time of say .3 seconds.
The difference of .4 and .5 seconds is twice the movement, or twice the time for movement.
I think the ticket is to get your bow as quiet as possible, shoot quiet heads and the quietest vane you can and shoot as fast as you can still get flight with. That is for average draw length and weight hunters.