Fat Smash Diet - Extreme Fat Smash Questions

I'm about to start the extreme fat smash diet, and I was wondering why he says to NOT select yogurt with fruit on the bottom, even if it's fat free. Is this higher in sugars or something??

The diet suggests, and wishes for you not to use this priduct because the fruit has unnatural preservatives in it. Which pollutes your body and goes against the entire phase 1 purpose, detoxifying. But I have read on other sites, if you must to go ahead, but why not cut up you own fresh fruit, and make healthier yogurt!?

It also has to do with all the sugar in it. I agree with the previous poster, just cut up some fresh fruit or throw some berries in there. I started EFS today (Sun 13 of Jan).