I think that would depend on what the food is. If it is processed food that uses artificial sweetners , then I would say “no”.
Sugar free would cover such a wide range of foods, for example, meat, dairy, vegetables, fruit , for example. So depending on diabetes type, medication and the like, some would be a better choice than others.
It usually means that it is, a big stretch from reality, no cane or beet sugar.
But that doesn't mean, it doesn't contain ingredients that are a different type of artificial sweetener or sucrose, fructose, saccharine, lactose, or any other type of ose! Pure glucose is bad for you! Or starches, which have a tendency to turn into glucose rapidly if you are type 2!
Dietary control is about not having the spikes that you get from many types of carbohydrates or sugars!
You need to look more towards low-carb foods rather than just sugar-free. Note that the there are 'sugars' which some manufacturers don't label as sugars and hence are labelled sugar-free when they aren't