Do you really think your experience is representative and that most people take a few minutes to learn how to drive? Honestly, it even sounds like a humble brag (mostly because I'm a little jealous)
Learning to shift gears while on traffic and without letting the engine die is one of the hardest parts of learning how to drive (together with parking). Granted, I'm a lousy driver, but it's the same for most people I talk to: letting the engine die is the top reason for failing driving tests.
Perhaps it's just Brazilian cars being bad, but I doubt it.