I only quickly skimmed the article, but it seemed to mainly be about understanding and engaging seriously with ideas (even if you disagree), thinking critically

I only quickly skimmed the article, but it seemed to mainly be about understanding and engaging seriously with ideas (even if you disagree), thinking critically, being open to new ways of looking at things, and so on. That seems like a very reasonable message to me, and something that politically active younger adults could definitely benefit from. We all need to wrestle with and face the limits of our own understanding at some point, if we wish to grow.