he is being helpful by pointing out the difference between a tourist visa and visa exempt which have completely different conditions. Sure, people get confused but when they use the wrong term they will often continue to remain confused. Are you annoyed that he corrects people or the way that he corrects them?
maybe legal, but probably not very safe. The driver's seat should be on the side of the car near the middle of the road so that when you pass another vehicle, which we do all the time, the driver has a quick view of what's ahead. I was once a front seat passenger in Cambodia where cars drive on the right side, in a vehicle that was from Thailand where the driver's seat is also on the right side. So I was sitting on the left side of the car in the front seat and every time the driver passed other vehicles which was dozens and dozens of times over 6 hours, I as a passenger was the one who had the first view of oncoming traffic. But of course I had no control of the car, so I couldn't decide when it was too dangerous to pass.