That younger age group has also had years of liberal indoctrination to accept homosexuals, “gay marriage”, and all kinds of liberal ideas. They see nothing wrong with Obama. In fact, part of that indoctrination has been continuous and relentless propaganda against their Republican parents. I have had countless 25-40 year olds basically tell me they rebel against their Christian/Republican/Conservative parents and are proud to do so. They are brainwashed into thinking this way.
And then when they have kids of their own, they will finally understand.