Quite true. Unfortunately, some riders lack that level of maturity.You have to have a measure of self-control and maturity when driving/riding on the street. Yes, your bike/car is capable of a certain speed through that section, but you should probably take it at 80% or less.
The basic principles that allow you to drive or ride fast are all still at work when you are not driving or riding fast, you just have more margin for error, and that awareness of the principles can help to save you if you suddenly need the last 20% or you screw up and use 21% and start sliding.
On a main street near where I live, I see riders doing wheelies and riding at exceedingly irresponsible speeds. I'm told that the police won't even try to do anything about it since they can't catch them.