Wrong.
Even a small motorbike light is not enough to detect all and any dangers that one might come across on a thai road.
What if there was a hole in the pavement. Or a piece of steel on the road. Etc. What if a dog ran across the road. Or a snake was on the road. What if his tire blew. What if the street light wasn't working to help detect any of the above. As is its intention. Otherwise why even have them.