Yes, but not in this case particular case.

Listening to the video, you can hear the pissed off contempt in his voice.

I've said before, Joe Biden is a criminal thug that if he were blue-collar, he'd have died in a gunfight with police after trying to sell crack to elementary kids. He hates people, and has nasty swings of temper. He genuinely hates Trump supporters. It was a genuine, off the cuff, remark.

His primary mechanism of undermining Kamala has been to basically let her fail, and not really push hard to assist her. The teams hate each other because, well, she coup'd him with Nancy; and then she fucked Nancy. She's a proper Usurper, and a lot of people are letting her fail. Biden isn't the only one. Nancy, Shapiro, and Obama are cooling their heels.

Also, take this to heart the next time someone tells you that you have to vote X as a vote against Y. Each of of the Democratic Establishment's elites are choosing to let Harris destroy her whole career and let Donald Trump win the election; rather than help her out. They know the value of purging their ranks of people they don't like or can't use.