Read it as "when they get older" if that makes you feel better. It's known that people are more likely to switch from liberal to conservatives when they get older than vice versa.
The current millenial/GenZ generations are dealing with multiple economic crises during their career development, as well as property and other asset bubbles keeping them from accumulating the same assets as their parents.
Which they'll eventually pass to their millennial offsprings when they die.