I was just speaking to a doctor friend of mine who told me that yes, fruits do have loads of sugar, but it's good sugar (if you're not diabetic). It's a much better way to get your sugar fix than anything else. She also said that you should base your diet on veggies and fruits with more focus on the veggies, since the fruit DOES have sugar. However, she only feels that you're eating too much fruit if it affects your weight. You have to really listen to your body and see what it tells you.
So what I got from that was that if I'm following the fat smash to a "T" and am either staying the same or gaining, then I should limit my fruit intake.
I hope this helps!