If he can't fight for what he believes when everything is on the line, than he doesn't deserve even a tenth of the respect people give him for being a fierce and strong advocate for progressive and socialist policies in the country.
Incapable of pushing over a supposedly weak Biden on what was supposed to be his ace in the hole, or indecisive and unable to push what he believes. Not exactly good either way you spin it. But if I were to bet, it would be on the former.