Well I learnt about many things from the many journeys in the family car when a child, then as I was taught further to pass the test my tutor taught me to drive to pass then how to drive after the test too. From there it wasn't long before I met Paul, but we have been talking about all teh COAST principals and a (lot) more since then.
[Please Note 'you' (below), is 'one' and not directed at any poster here.]
I do agree that a driver can learn without knowing acronyms (and there are many), but that is not the point, that I believe was being promoted above.
Unless a driver 'thinks' particularly about their driving skills and abilities, and ask the 'what', 'why', and 'how', you might do each task better, you are unlikely to ever get anywhere near e.g. COAST concepts, ever, you need guidance and education, it is not necessarily 'obvious'.
This does not say that driver's / riders, don't concentrate at all, but that when a driver catches themselves thinking other thoughts, until they have been guided or educated, it may not be that obvious to some, that their lost concentration is ever that much of a problem or could lead to a serious problem.
Through education and guidance, you can start to appreciate the importance of each skill and ability, and thus gain crucial knowledge. Learning that concentration is extremely important is a prime route to good driving (one of 'prime' skills anyway).
By going through many of the good driving principals, you encourage and enthuse yourself, to know how to start to be a really good driver. Patting yourself on the back, when you have anticipated a potential hazard, and acted appropriately, preventing an incident or stopping (or other action) early as the other driver/rider thanks you (you hope) for that early thinking that stopped them or you getting into bother, is incredibly satisfying!
This beginning to better driving, can help drivers/riders to start to appreciate a level of driving, that they may not have been previously aware.
it is this ongoing downturn in skills, abilities, knowledge, judgment and risk awareness that is beginning to be become a real issue on the roads. When people drive/ride in a manner that fails to acknowledge another's rights, they can easily become frustrated and angry, and guess what this is exactly what is happening. people are rude to each other.
By all road users attempting to be as good as they can be, with only the minority, who may never understand this, the vast majority will retain the better level of driving skills on the road, and so the roads get safer.