Exactly right. If we can't make the GOP brand attractive to young voters again and overcome the opposition's massive effort to damage it among that demographic, then the racial statistics won't really matter. Liberty has an inherent appeal to youth, but Reagan was the last President able to articulate a GOP vision of liberty.
We may be on our way to creating a white identity, not a good thing but understandable as this society becomes more polarized along racial, ethnic, and cultural lines. This romanticized idea of a melting pot may be crumbling as the demographic mix changes. The US is not immune to the same kinds of forces that affect many other societies. In many cases, it is just a function of numbers that can set off the dynamic of political tribalism.
I fear we are heading that way as the country becomes more diverse and multicultural. Triumphalism among minorities that non-Hispanic whites will soon be a minority and the fear that engenders among whites will be a significant national problem, especially since there is a decided wealth gap between most minorities (except Asians) and non-Hispanic whites. Class struggles and the echos of Marxist rhetoric will increase. Wealthy and the rich will become synonymous with certain races and ethnicities. The is the tinder box that Obama's rhetoric has spawned. He has been a very dangerous influence on this country, a divider not a uniter.
It is interesting to note that 54% of Latinos self-describe themselves as white.