Very much agree with this. There is a LOT to learn when one starts out racing. The consequences of not knowing what you are doing are very serious for you and those around you.
It's also that you don't know what you don't know and perhaps many don't appreciate the risks and responsibilities of the sport they're getting in to.
If I'd have know about RYM before I'd started I would deff have done a few of those before starting. Same with a day or two at the drags.
Going round the circuit quickly is one thing but is only a very small part of what makes up an experienced racer.