I will argue again, you miss the point.
It is not all or nothing.
While what you say is true, that fact has nothing to do with the large segment that do not live in the conditions you describe. If there is a Hispanic community, there are subcultures within that whole. There are those that are prosperous and upwardly mobile and they need to be courted to become Republicans.
A few voters here and a few voters there and pretty soon you have a landslide (if self righteous conservatives actually get up the initiative to go vote)
I'm not missing the point at all, because the GOP's strategy of courting middle class Hispanic voters comes down to supporting policies like amnesty for illegal immigrants and liberal immigration policy that actually serve the interests of the barrios and borderland colonias. As long as middle class Hispanics feel a sense of solidarity with the illegals and the cholos, this won't change, just like the political habits of the black community won't change until middle class blacks stops seeing their ghetto counterparts as "brothers."
It's a completely counterproductive strategy because it alienates more GOP voters who oppose amnesty and open borders than it can possibly win over form the target demographic.