A good thing to live by is "if it fits your macros."
There is a big difference between simple carbohydrates and complex carbohydrates, and potatoes are actually a complex carbohydrate.
Many diets have a focus on lower carbohydrate consumption, which is fine, but moderate carbohydrate consumption fits in most diets if you pick the right ones.
Potatoes have fiber, protein, potassium, vitamin C, B6, riboflavin, magnesium, copper, manganese, phosphorous, and even more trace minerals.
@Deathswallow I think I messaged you a bit about this already. Simple carbohydrates are made of one or two molecules and are quickly digested, enter the blood stream rapidly, and spike the blood sugar. These are white pasta, white bread, table sugar, syrups, ect. Complex carbohydrates are made of several molecules which mean they enter the blood steam a lot slower because they take longer to break apart. Most of these are plant materials. Durum wheat (and its products), brown rice, beans, white and sweet potatoes, whole fruit, green vegetables, corn, oats, ect.
There is a saying. Eat a colorful diet. You're eating the correct carbohydrates if you avoid foods that are white (there are a couple exceptions). These foods are often high in fiber and minerals and vitamins.