Not true. Being a hardcore poker player in my past life I can tell you that you want to win every hand, either by bluffing or actually having a better hand. If you just sit there and only play premium hands you’ll be easily made as a tight player and people will avoid getting into pots with you, so your probability of winning might be high, coz people will just fold to you as soon as you show some action, but your returns not so much as you'll most likely just pick up the blinds.