Once upon a time, Biden claimed to have learned that you can't peel off voters from Republicans by trying to outflank them from the right. GOP voters will simply never give Democrats credit, as we've seen on immigration where Obama and Biden both are still accused of throwing the border open to let "drug dealers and murderers" into the country despite having some of the most draconian anti-immigration controls in history.
But it's what comes naturally to Biden and Democrats in general.