Just reading this from the start.
My first visit to India in 2004 I was met at the airport with a car from our office. Mid way into Chennai I asked the driver whether they drove on the left or the right (it certainly wasn't obvious to me). He said "yes".
I asked him if he knew what the white lines were for. "Just some nonsense the British left in 1947, he said.
Then, nor in all my subsequent visits, did I have the courage nor skill to get behind the wheel of a car.
Having been a passenger in India, I can't imagine how I could ever be a driver. Cars, trucks, motorbikes with a family of five on board, all turned onto the main road from the left without slowing, at places where in England there would be traffic lights or a roundabout. It scared my wife. I think though that nobody would ever get anywhere if they didn't drive like that.
In my teens when learning, people from Newcastle would head 35 miles up the road to Alnwick for their test. They got the same licence, but there were no traffic lights or roundabouts to navigate.

My cousin emigrated to the USA in the 80s before taking her first test somewhere in the deep south. It consisted of something like driving a loop around a residential block and then reversing successfully into a side road. She reckoned it was far easier than a British cycling proficiency test…
Minehead was popular at one time, especially on Butlins changeover days. I don't think they do tests there any more.
On the matter of bots and tests, is it beyond the wit of man to amend the booking system to start with "Enter your driver number here" then allow changes only via DVSA. A system could be added to allow registered driving schools, such as those doing intensive courses, to book separately, but that would be the answer, wouldn't it?