There was a recent study that was published in November 2025 that basically showed the psychology behind what you're seeing. Basically, as the likelihood of homeownership drifted further and further, younger people worked less, didn't work as hard, and actually engaged in riskier investments. Check out the quote below, it's from the study:
"The model also shows that as households' perceived probability of attaining homeownership falls, they systematically shift their behavior: they consume more relative to their wealth, reduce work effort, and take on riskier investments. We show empirically that renters with relatively low wealth exhibit the same patterns. These responses compound over the life cycle, producing substantially greater wealth dispersion between those who retain hope of homeownership and those who give up. We propose a targeted subsidy that lifts the largest number of young renters above the "giving-up threshold." This policy yields welfare gains that are 3.2 times those of a uniform transfer and 10.3 times those of a transfer targeted to the bottom 10% of the wealth distribution, while also increasing homeownership rate, raising work effort, and reducing reliance on the social safety net."
I think you're seeing something similar with new grads. The chance of them actually hitting retirement with enough money seems so far out of reach that they just check out prematurely.
here's the study below if you actually want to read the entire thing.