As always in life: it's about balance. I've never been a huge fan of food trends. Nowadays one even needs to apologize if eating a steak.
Sugar doesn't kill anybody if applied in the right dosis. Of course drinking coke instead of water may kill you over time, but that's no news. During the past 37 years of my life I haven't ever gone on any type of diet, and the annual cross check at the hospital always shows me best values.
If we go ahead with these food trends there will be a point in time when we're actually not allowed to eat anything at all.