I agree that you can intuitively tell when a market is going to change direction or continue with the trend on occasion but i'm very skeptical whether this can be done successfully over the long run, very skeptical. Where's the evidence that he only uses his gut instinct? This Michael Marcus could be saying it so he doesnt have to reveal his edge.
George Soros relies on his gut feeling a lot. Specifically, he exits trades when his back starts hurting.
2 reasons why top traders don't admit to using their gut/intuition etc in trading: 1) they can't really explain their method 2) telling a client that they use their gut to trade might not go down too well. Easier to make up some sophisticated engineering bs.
Of course, I believe gut feeling is very important, especially when you are doing countertrend trading. Your gut feeling will kick in when you sense something isn't right. Like I mentioned before, such gut feelings often work out well for you because you develop it after flipping through ton of charts from micro to macro big pictures during intraday trading hours.
True intuition is being able to foresee and predict trends in sectors, geopolitics, and human behavior. It does not work for day-trading. Long term however, it will make you wealthy.