I know what he says, but that's not what I hear him actually proposing to do. His message is the standard bipartisan, common-sense solution thing. I mean, look at this ad:
That's a return to normalcy message: let's end the partisan bickering, go back to the good ol' days when the extremes didn't dominate the conversation, and we can all come together to do the things we can all agree on as Americans.
The problem is that it's idealized bullshit (in my opinion, of course). Partisan warfare is how shit has always gotten done in our adversarial system. The Dems' greatest modern achievements, like New Deal and Civil Rights Act, came through vicious political battles that were forced on the other side through sheer political power.
And the extremes don't dominate right now. Only one extreme dominates —the far right — while the Dems has been a feeble centrist party since Clinton took office. It is only relative to that modern rightward shift that Warren's policies could be viewed as extreme. Pete even recognized as much early in his run before he settled on the Biden/Harris lane.
I don't see any real difference between what Pete is saying and what Obama promised in 2008, aside from Pete wanted some structural reforms like eliminating the filibuster. Maybe that would be enough to have more success, but I'm skeptical about getting 50 Senate Dems. Either way, I see the lesson of the last decade as being that we have to fight from the left as hard as McConnell has been fighting from the right. Which is why Warren really resonates with me.