Actually, youth turnout is pretty high right now, with record turnout being set recently for both midterms and presidential elections. In 2020, turnout for the under thirty crowd was 50%, a possible new record, and it was 30% and 27% in 2018 and 2022 respectively, which are 30 year highs. Unfortunately, the Democratic Party leadership prefers centrist candidates, and frequently puts its thumb on the scale to ensure that moderate candidates win, so that turnout isn't translating into progressive politics.

Funny enough, just after I made the original comment, I read an article about how the youngest U.S. voters are starting to lean further right than before, so it's possible the ship has sailed on this all together. Given how aggressively the right wing has been to trying to indoctrinate young voters, who are watching Democrats successfully suppress left-wing populism while Republicans embrace right-wing populism, it's possible the youth are deciding that the far-right offers them only chance for change. I hope not, though, because then we're screwed.