A lot of people are disappointed with his presidency from my generation. However, it would be disingenuous to state millenials are abandoning liberalism or like qualities. Most embrace them. If anything, more people are becoming apathetic about American politics. I still see rigorous involvement from youth at the state and local levels.
If I strolled downtown here and asked millenials if they line up more with liberalism or conservatism, I would wager an overwhelming majority would say the former.