From Mexico to Argentina the vast majority of the population is composed of indigenous and mestizo, the "extermination of natives" was only present during the Spanish colonization, the difference is certainly that the South American countries received a lot of European immigration after their independence, something that I do not pass in Central America.
The vast majority of Mexicans are everything white people wish they were: family oriented, independent, community minded, honest, modest, hard working and friendly. Plus, they have fire in their blood and are willing to fight for their liberty.
I think he has an idealization of what is the Mexican, I know several, and they are not, many of the features he described are a cultural legacy inherited from colonization, the Spanish, the Portuguese, and all the descendants of the Latin people, they have many of these characteristics; family oriented, independent, community minded, etc, etc.
To finish, I also define myself as a dreamer, because I believe that this whole world can improve, and I definitely believe that it will, I also believe that the less power the state has and the more power people have, things will start to get better. I am not anti-mexican nor anti-white, I believe that everyone in this world has their strengths and weaknesses, and I believe that the better they take advantage of, then it will be better for everyone.
It was also a pleasure for me to have had this discussion with you, regards.