One of the reasons a lot of OODA loop newbies reduce the idea "of getting inside the adversary's decision loop" or "control the tempo" to "increase the tempo" is that often, when somebody else is inside your decision loop, the easiest way to regain control is to increase the tempo, *even if you do it with random meaningless actions* 

But this is transient. It's a way to break out of the stalemate, but when you're ready to start controlling the tempo, you have to be able to modulate it across a large range. If you can't operate at the slower tempos as well as the faster ones, you're going to get screwed.

This framing connects really well with the concept of seme (攻め) in kendo tbh.

You’re trying to get each other into your own OODA loop.

Higher ranks can pace theirs fast/slow. Lower ranks need an element of surprise that is not purely speed-driven (i.e change of tempo)