One of these days he is going to take one of these blind bends without slowing down to find a broken down tractor blocking the road
Or a lorry on the wrong side of the road overtaking a parked car.
The notion is the (moving) point (eg on a bend) beyond which you can't see. Depending on the curve of the road, it can get closer to you, in which case slow down, or if the road straightens up, you can potentially go a bit quicker. You need to keep the vanishing point at an appropriate distance for your speed.
When I'm walking or cycling in the lee of a blind bend I move out toward the centre of the road so that overtaking traffic can see me earlier.
It's not really a misuse as it's using the two words perfectly correctly, even if it does then having a different meaning from the term from perspective drawing, which is itself a contrived phrase.
It's misleading and confusing because it's a term that's already in common use to mean something entirely different.
The point of the course is to nudge drivers towards better behaviour. If they are arguing, then they are resisting behaving better, and so points and a fine should be the result.
Twenty odd years ago I saw an episode of Horizon (or Equinox) on the subject of education, and in particular, what the research shows about which methods work and which don't.
If a teacher just stands in front of a class full of pupils and recites whatever he's try to teach them, the amount they retain is minimal because people don't come to the class with empty heads waiting to be filled like putting water in a bucket. They found that what works far better is to start by canvassing the pupils to find out what preconceived ideas they have, explaining why they're wrong,
then giving them the correct information. If you try to refill a bucket before emptying out the dirty water first you just end up with a bucket of contaminated water, and a load of water all over the floor.