Biden doesn't remember or know what he says from one day to the next.
He will change his mind on this a dozen times before the election.
Like almost all Democrats, I doubt he actually has ANY sincere authentic real opinions on anything.
He is a political whore. He will say and do anything based on the moment and the audience.
The only thing Biden actually cares about is Power, the White House, and TDS Trump hate.
He has no thoughts or opinions beyond that. Too far gone at this point.
That's why the Democrat Machine wants him so badly. He is a zombie, an empty vessel.