I personally think that cultural significance of Salvador Dali became diminished by the mass popularity because it has affected so many people as well as so many countries. I personally think that cultural significance of Salvador Dali became diminished by the mass popularity because it has been hard for many cultures.
Salvador Dali's power and cultural significance has become very diminished because of his mass popularity. This is the same for ust about anything. Once a person or idea goes mainstream, it becomes a watered down and trendy version of its previous self. This is what has happened here, unfortunately for many.
Certainly, it cannot argued that the popularity of Salvador Dali has in anyway diminished his cultural significance. In fact, this popularity has solidified Dali as an easily identifiable, cultural treasure of Spain. Dali's artwork can be recognized not just by the Spanish people, but by people from around the world. It is only logical for one to assume that such significance is a by product of his popularity.
No, the cultural significance of Salvador Dali has not become diminished by his mass popularity, because his work is all the more appreciated. Dali is also famous for his politics, having been communist early in life, but that belief shifting in his later years. Being popular means that his culture is all the more significant, because he has more influence.
I do not believe the cultural significance of Salvador Dali has been diminished by his mass popularity. There will always be people who admire art for what it and want to buy it and display it, but there will always be other people who simply study are and its impact.