Earlier quoted context omitted.
1.8 million voters over the age of 55 die every year in the US. 4 million voters turn 18. We're just arguing time horizon and cohort turn out rates. Bernie was just too early after Reagan, globalization, and deregulation. https://www.pewresearch.org/politics/2018/03/01/1-generation... https://www.pewresearch.org/social-trends/2019/01/17/generat... https://archive.is/iRyQE https://www.pewresearch.org/short-reads/2014/…
Except that people also age out of far left ideas. The 18 year old who's like "hell yeah, ownership is theft, raise the taxes" feels differently when they turn 35 and have to pay those taxes.
Your views of the situation disregard your observations about the situation, if you're at any way aware of the data about Sanders' popularity over the last 10 years, the popularity of his policies, the fact that he was nearly President in 2016, and the fact that instead of him, a bunch of over-35s elected a wrestler game show host, it's nuts to still pretend that people generally mature into middle-of-the-road conservatism.