I think speed climbing is kind of an artificial discipline. Climbers compete on the same holds and train on the same holds, which doesn't have much in common with the climbing philosophy in my opinion.
I shriek when I am climbing at my absolute limit, but never shriek in the warm-up or when trying the moves. No matter how terrible it might sound, it helps me.
The harder routes you climb, the more interesting the climbing gets and the more crazy moves you are forced to figure out.
What really motivates me to climb harder and harder is not necessarily that I want to push my limits or show who's best, but climbing harder and harder routes makes it more fun.
For the Olympics, I'm mostly training in the gym, so I'm running laps on the standard speed wall.
I thought I knew how to jug, but when you only jug 30 meters to the top of a sport climb, you don't need good technique. But jugging 400 meters, that's a big deal.