Biden was never smart enough to be a Sovie-loving saboteur.
He’s been a low class political grifter from day one. An enabler for his grifting family and the crooked Delaware banks.
You are correct. Biden has always been whatever the party required. He always supported whatever he was told to support, regardless of his past statements/votes.
Biden is a loyal party member in good standing and the Politburo is happy to have his shell out front. After all, they pull the strings of whomever is installed anyway.