We don't know, what exactly everyone cooks at home in their pizza ovens and thus how much or how little cheese they put on?.
We do know that Pizza tends to have the core components of a bread type base/tomato topping and cheese with or without other items. So basically carbs and fat. Maybe if you have a very small slice with a massive salad its not too bad but generally they are not a healthy choice food wise.
You can say what you want but Pizzas are classed as junk food.
The sort of pizzas, and their accompanying side dishes, made at home by, I would venture to say, the vast majority of those who have, or who aspire to have, a pizza oven, are about as far away from junk food as it it is possible to get and still enjoy one's food.
It is nourishing, healthy, freshly home-cooked food made from fresh basic ingredients and as heavy on the vegetables as is liked. It is also delicious - an important point in any food's favour.
You might also be interested to learn that
some carbs and
some fats are a requirement in a normal healthy diet.