This whole conversation as to who Joe Biden should listen to is laughably stupid. Biden can either be FDR or Herbert Hoover. If he listens to the centrists, following his natural inclinations, he'll be the latter and Democrats will truly be a dead party.
They are both owned by the same huge corporations (with some minor variation). One is the smiling face of oppression and the other one is the frowning face, but neither will create fundamental change as that is too threatening to the huge corporations that own both of them.