At the end of the day people need to find that balance and have a good relationship with food.
The food types they enjoy and what there personal preference is for meeting their nutritional needs, satiety, taste etc etc can and should not be influenced by stupid labels like ''clean'' ''dirty'' etc etc.
Nothing should be excluded unless there is an intolerance or allergy to a particular food type. No one should feel bad for having this food or that food. Food types do not determine health, consuming your required nutritional needs is what determines health.
If you can fit into your daily diet ice cream, chocolate, potatoes, pasta or whatever food go for it because any food type is allowed. Certain foods might contribute to more to meeting your daily nutritional needs than others but all foods do that in different areas. Some are more micronutrient dense than others, some are certain macros dense than others. So have a balance of all and never feel like you have missed out and enjoy life!