Most don't, because our education system was designed to not teach us those things so that we'd easily fall for lies like "raising minimum wage causes inflation". I don't think ignorance or falling for propaganda should be considered irredeemable sins. If they're acting like a jackass, screeching that their podcast proved it true or whatever, then it's not worth giving them any amount of time, but if someone's willing to listen, I think it's always worth at least planting a seed in their mind that they might look into on their own someday.

Everyone gets so defensive around political disagreements because we're all used to being at each other's throats, but I've found that people are more willing to listen if I take the approach of explaining instead of persuading. I'm not necessarily trying to win anyone over with a single conversation, I'm just explaining what I've learned. If they disagree then that's that, nothing good comes from trying to change someone's mind who doesn't want to change it, but most people will remember conversations where they were treated respectfully, and sometimes they start doing their own research when they don't feel like they're under attack.