If you're referring to me, I definitely didn't say that because I would never use that word.
Here's a tip: during the middle of a hotly contested election is not the greatest time to be telling liberals that there is something wrong with the Democratic Party. If you think you're going to get buy-in on "we suck" from people all-in trying to win the election, I mean what are we doing here? A lot of us were out on the campaign trail working with the Democratic Party. There are so many good people making a real difference, so many people who were busting their ass and putting in time and money and blood and tears to get us to victory. Shitting on the Democrats during that campaign is never, ever going to be well received.
Obviously the election put things in a different light. And since everyone else is offering their own election post-mortems, I will offer mine. Of this I am quite confident: moving "left" is a bad strategy that Democrats will not adopt because it is a bad strategy. Moving to Bernie Sanders politics is probably the worst idea possible.
Stick to what has always worked for us. "In order for my children to be OK, I need my neighbors' children to be OK" is a message that is more or less undefeated when we've run with it. We can't always run with it, because it's a campaign message. It's not a governance message. It works best when people are feeling hopeless -- which is to say, when Republicans are in control. But I cannot think of a major campaign that liberals have undertaken with this message that has lost. WJC's campaign embraced some of this.