memes

"You will become more conservative when you get a job." means "you'll want lower income taxes", as though that would make a difference.

"You will become more conservative when you own a house." is substantially more true, as it ties the owner's financial future to a piece of property, which means they'll tend to favor policies that raise property values and create homelessness.

Both of these assume that the young person in question is politically illiterate and stands to benefit from the status quo. Since the US school system isn't going to explain why communism is good or even give a concrete definition, all you are left with is a "politically neutral" outlook where the only acceptable options are the two major parties: fascism or fascism with a human face. I imagine this is less true for people younger than me due to the presence of more politicized social media, but my graduating class had no political understanding at all.