I've ridden with steady wheels who are uncomfortable racing. So maybe my comment that they suck riding with others was exaggerated. The point is the ability to ride steadily, while necessary, is a relatively small part of racing. Just because someone can learn to ride rollers smoothly after 10 1 hour sessions does not make them a racer.

The % of people racing bikes is extremely small and the number riding rollers regularly even smaller. The reason most people don't race isn't because they can't figure out how to ride rollers.