It's a bit hard to explain and it's Saturday so I'm not even going to try to hard, but once upon a time running for president as a Democrat involved doing this elaborate dance through a rhetorical minefield, carefully avoiding subjects or commitments, speaking phrases of pre-approved bullshit that the talking heads had agreed were acceptable. Walk outside the lines a bit and YEAARGH BOOM.
That's the game Mayo Pete is playing, and I think it's a game we have, somewhat, moved past.