He approved everything that was made, or at least he used to. There is an old interview circa ESB where Lucas talks about the merchandising ideas he turned down for Star Wars as they were “junk” in his opinion.
As I said, what you are on about has nothing to do with one being an artist or not. It is being about whether one is willing to trade useless pride in exchange for conditions that will facilitate artistic freedom. If one is a true artist, he/she will value artistic freedom more than some petty thing like that.