Carville on the Progressive Left: They're "Dead-Ass Wrong"

I've always liked Carville, despite the fact that he's a professional bullshitter. 

He's exactly right about the left:

Understand this, and I’m going to say this as clearly as I can: Anybody that has ever listened to anything that the progressive left has ever said has lived to profoundly regret it. Literally on every issue, they’re dead-a[ss] wrong,
And why is the border an issue? Because Biden listened to these people early in his term. They weren’t just wrong; they were catastrophically wrong. ...These people are not just wrong — they’re literally walking catastrophes. And the faster people realize that, the better off they’re going to be. And they don’t have very much power.

As for the last sentence, I guess he means: the Democrats could stand up to them if they wanted to...

They just apparently haven't wanted to.