You guys are right, but I'd say the better you are, the more you will profit from proper techniques. Kevhen, I know what you are saying, I'm learning to play mixed doubles with many players not as good as me. When they blow a shot, they often kid each other and talk about how it is not like when the coach spoon feeds them.
"In theory, there is no difference between practice and theory. In practice, there is." Lawrence Berra