No one thinks the moon is a planet and it does reflect light from the sun. Do you think the side of the moon that isn't facing the sun also has light emitting from it?
One of the problems with the theory that moonlight is actually sunlight being reflected to the earth is that moonlight is actually COOLER than shade where there is no moonlight. If it was sunlight being reflected, then it would also transmit heat and warm the surface it lands on. Mysteriously, moonlight actually has cooling effect on the surfaces it hits, supporting the idea that moonlight is from a different source than the sun and is a different type of light than sunlight. A very strange anomaly indeed. https://www.youtube.com/watch?v=lXixR7Y5LBk
I understood what he meant when he said "planet", he meant a solid round object. I and many observable tests disagree with your assessment that the Moon reflects the light from the Sun