Another thing is that neither in Miami nor anywhere in the U.S. do you really have non-Hispanics integrating and assimilating to the Hispanic population. No matter how large or dominant it is demographically.
In Miami you don't see African-Americans, Haitians, anglos or anyone else "becoming" Hispanics.
In fact the movement is in the other direction, with younger Hispanics becoming anglos, or at least becoming English dominant.
Even if you go to places like Laredo which are 95% Hispanic, an Indo-American kid will integrate into the broader American anglo culture and will only acquire those snippets of Hispanic culture that have become mainstream Americana.
This is quite different from Montreal/Quebec where a growing segment of the population is made of people of non-francophone origin but who live pretty much seamlessly as francophone Québécois.
It's been estimated that about 15% of the people who are categorized as "francophones" in Montreal aren't of francophone origins.
In Miami you don't really have anything like this: comedian Mariana Mazza. Born and raised in Montreal. Lebanese mother and Uruguyan father.
https://www.youtube.com/watch?v=puoWFbseVU4
Not to mention the other two guys in the video. One of them is called Dave Morgan.