I'm in the same boat. Comments really aren't that bad, mostly just nostalgiaposting. The battle itself was nowhere near the levels of cringe as the two you mentioned... Ford mostly reads as he was -- a rich, Nazi sympathizing moron -- and Marx kinda kills it tbh.

I’m really, really fucking tired of ERB reducing complex sociopolitical talking points to two crackerized talking head caricatures rapping at each other.

That is because ERB is not about an educational channel dedicated to teaching sociopolitics: it's a humor channel about rap battles between either historical figures or fictional characters that got popular more than a decade ago for putting Darth Vader to rap against Hitler and Lincoln against Chuck Norris. As with other youtube fades of the era like Smosh, Nyan cat and The Annoying Orange, I don't find it funny, not at least since I left middle school, but we gotta be fair nonetheless and understand that it's just a silly series of videos aimed to entertain, not to educate nor to make an academic exposition of political themes.