Fair enough you didn't specify every single individual, but the inference was clearly there. You can dis-claim the comment if you like. And 5 or 6 lessons could be week long I agree.
I could get someone to pass their test in one lesson then. A single year-long lesson.
Anyway, for me it was something like 24 lessons and two tests. The instructor said I was ready after 4 lessons but a dreadful winter meant I couldn't get a test date and my dad insisted on continuing to pay for lessons (then I made a silly, SILLY error on my first test).
My brother passed after two lessons. He taught himself to drive by watching my dad driving – just had a couple of lessons to be sure to know what to do on a test.