And it makes sense. We are omnivores, the entire point of being omnivores is to be able to fuel our body with whatever food is available, and it probably played an important role in the development of the human species. It means our body is very tolerant regarding what we eat, and while some types of food may be healthier than others, the effect will be small compared to other factors like generics, lifestyle, exposure to harm, etc...
What I think is important though is that we should have a diet as varied as possible. It is not necessary, but the less varied your diet is (it includes veganism), the more you need to pay attention. With a varied diet, you are very unlikely to miss something, and if you eat too much of the same thing, you may exceed the ability for your body to deal with a particular substance, making it toxic. Another problem is the psychological aspect. Essentially, the abundance of food that we have now messes with our brain, causing addictive behavior. And I think this is the focus of most serious nutrition science today, and that's also what Ozempic is all about.