Certainly vegetables play an important role in most diets in most countries. There are people who try to claim people like eskimos had no access to vegetables and all they ate was fish and animal fats and they were healthy….however, nobody mentions that they had a short lifespan in general….
But are the vegetables we eat today really good for us? It is again an individualized situation.
There are a few points to consider though:
Many raw vegetables are hard to digest such as green beans, cruciferous vegetables including kale etc.
Vegetables with seeds such as peppers, tomatoes, eggplants are definitely known to be healthier if the are peeled and de seeded. Most cultures in the middle east or Europe know about this and do so automatically.
Sprouted vegetables may have higher concentrations of certain toxins and therefore not necessarily recommended.
Beans and legumes are in general hard to digest so one should only use them in small quantities and only those that one can digest easily. Bean sprouts are not necessarily easy to digest . It depends and each person is different. And in general they should not be eaten raw. Far better slightly sauteed or cooked.
Vegetables do contain fiber and can be beneficial. Even Maimonides recommends eating boiled salted vegetables early in the morning for constipation issues and seasoning with olive oil.
Vegetables have always had their place in the human diet. People who ate little to no vegetables were often lacking important vitamins such as vitamin c . I do believe in consuming a good amount of vegetables but we need to know the quality and how they are grown and which ones go well with us individually. Eating too many vegetables at one meal definitely is not healthy: combining too many different foods can result in a lot of gas.