For sure, if Trump continues to keep the majority of white votes and skims just a few percentage points from the Hispanics, blacks and Asians the democrats never win again. The democrats method might be a winning model in about 20-30 yrs.
I don’t think it will be a winning strategy even in 20-30 years.
The US is the only country on earth where “hispanic” is considered an ethnic group. The truth is “hispanic” is no more an ethnic group than “American” is an ethnic group. Most “hispanics” in the US are in fact......White. Their rates of intermarriage are 50% in the first generation. Most do actually learn English. Like all previous immigrant waves before them, they will steadily go more and more native over time. Its already happening. Trump garnered more of the “hispanic” vote than Romney did.