I already told you. Bernie would've beaten Trump regardless, Biden was only popular in states that ended up going to Trump, and carried that momentum through the Primary process. It's likely that Bernie would've won flat out had the primaries been simultaneous, plus there's the previous DNC fuckery you keep walking back and pretending didn't exist.

All of that is to say that the DNC and major news outlets absolutely massage the narrative in favor of the most bland and benign Capitalist they can, in this case Biden, despite Bernies policies being far more popular.

It's quite simple, and no matter how hard you defend the current system, it's fucked regardless and designed to change as little as possible.