I'd say that the issue isn't US hegemony as an axiomatic given but more as a fundamental prerequisite for the political system. The deliberately bad education and strong economy works only with a vassalized world to feed upon by getting highly educated workers from it. The population doesn't care about US hegemony directly, but cares about its consequences as the hegemony is critical for the economy. Kinda like the Saudi economy depends on oil prices.Well, yes to the effect, but much of the US embraced it earlier than the election, since they didn't perceive what they thought was lost as having anything to do with hegemony (even though a big chunk of it was). The common historical trend for both political parties is that they externally sought US dominance abroad, but the Republican party suddenly discovered that a huge chunk of the population simply don't care about US hegemony, and most of them vote Republican and most of them vote Republican, to the party's own surprise.
It doesn't help that a lot of the political elite treated US hegemony treated as something like an axiomatic given, a natural state of affairs that required no tending to.