I think just mentioning the demographic issue is already a momentous change and in my opinion, it does not really matter what they may or may not intend with this. The results will be quite clear. American blacks vote something like 90% Democrat. Hispanics are similar. This type of rhetoric will almost exclusively affect white Republican voters. There is also the matter of how white Americans will pro-actively make their own interpretations of what this demographic rhetoric means for them. The important thing here is not the exact position the establishment conservatives are taking on this issue, but rather that they are talking about it, bringing it to the attention of their voters and legitimising it at all.