Trump is more opportunistic than Biden. Biden is too busy tripping over his own dick trying not to look like the "Satanic Bolshevik Anarchist" that Fox and Breitbart paint him as that he avoids progressive policy planks like the plague. Meanwhile, Trump's death cult are ride or die no matter what, so he has no such handicap, and can pander with the occasional half-measure like "Medicare for All (who tested positive for COVID)." This doesn't make him left of anyone, let alone Biden, because any material gains for the working class are both incidental and fleeting, because all he gives a fuck about is his image and making magic money line go up.

Trump is way easier to manipulate, though. I'll give you that.