Shock loss and finasteride

Everyone is shitting on this guy for not taking fin but then. Dr. William Rassman writes a lot about successful transplants with no finasteride. What are your thoughts

Hair transplants can be done without finasteride; however, native miniaturized hairs often fall out (a condition called shock loss). The older a man is, the less the risk of shock loss. This condition can be predicted by analyzing the amount of miniaturization that is present.