I feel like the left has really taken young people for granted recently.
They've just assumed that Gen Z (and soon Alpha) will be more progressive than previous generations as if that's just the natural and inevitable outcome.
As Hiku touched on though, a lot of the youth, especially men, are slipping through the left's fingers because while the left has been preaching political correctness at them, the right has been smarter at making their politics seem cool, edgy, and anti-establishment, which appeals to teens and young adults.
In 2020, just 36% of Gen Z voted for Trump; this year that grew 7 points to 43%.
For years now I've heard leftists talk about how the world will be a progressive paradise once all the conservative old people die, but people have been saying that since my parents were young lefties in the 70s, and here we are half a century later.