Trump's coalition was sick of losing. Trump's coalition was told to vote for him and start winning.
He just won bigly. Huge. Huuuuuuge.
The question is now if they are sick of winning yet.
Or if they've yet realized that when Trump wins, they still lose.
Let's assume for a moment that the nightmare world conjured by Bannon and Miller is somehow representative of the reality in which Trump's base lives; for good measure let's say Navarro is right and every other real economist is wrong. It's still the case that Trump's wins have, with the exception of conservative justices any Republican would nominate (and that were largely McConnell's doing) been mostly in areas where his interests dovetail with the Republican party line: to wit, lining the pockets of the wealthy at his base's literal expense.
There's still no wall to stop the brown menace from carting off the base's womenfolk in exchange for drugs and crime. (Again, we're taking the Trumpist propaganda verbatim here.) The coal plants are still dying and robots are still taking their manufacturing jobs away.
Most grating of all, of course, the coastal liberal elites are still calling them a bunch of stupid ugly backwards inbred racist pedophile troglodytes and waiting for them to finally overdose on opioids so the country can move forward in a big LGBT steamroller trundling over the ruins of their churches and guns or whatever Alex Jones is screaming about this week. (Again, not saying this is actually a thing.)
So yes, Trump is winning -- but even in the ludicrous world he peddles to his followers, they're still losing. Kavanaugh was a win for pro-corruption interests in the government and conservative partisans, but he's not going to make flyover country less of a shithole in the eyes of the coasts or make them less of a laughingstock. Nor would Trump want to do anything that
would materially help his followers. He needs their animus toward everyone else to keep them behind him.