As long as a child is receiving adequate nutrition, is it necessary to force him to expand his culinary horizons? Natural curiosity tends to balance out temporary fixation in the absence of such abnormal thinking that might arise from feeling a lack of control.
> If we gave him autonomy, he’d choose candy and soda.
Whether or not this is the case, there's a difference between allowing choice and allowing all choices, and there's a difference between imposing quality and imposing quantity. But, I don't think the stereotype of a kid binging on junk-food without boundary is accurate outside families that build such foods into a rare, prized(!) and denied commodity. It's just unfortunate that that attitude is so pervasive.