If you have free speech, yes you have that right.
Speaking of gluten free - i tried it once. Turned out either i have a mild gluten allergy or consciously picking the food I ate based on nutritional values made a significant difference in my disposition. I was more pleasant to be around, more energetic, had less ailments, was more regular in bathroom breaks, and overall felt better.
Of course that was not a proper study and it just as well could have been a placebo effect moving in. I'm back to my old ways again with a few exceptions and do not see much of any reversal though.