Not always... the stereotypes can be true, but are not always correct. If you watch a group of so-called "reckless" young skiers or snowboarders, it's often apparent that though they may ride quickly and aggressively, they rarely crash or impact others, because even though their speed is due to some level of immaturity, it's also backed up by some level of confidence and skill. Occasionally you will see one or two stupid young fiends bombing straight down the mountain, headed for some pain (whether it will be their's or someone else's), but most of the time those who are going fast are not actually out of control. They have been doing their sport long enough that they are confident in their abilities to stop or correct their direction before they encounter a tree or a small child.