The Demexit was where Sanders supporters left the Democratic Party. I made the Demexit early on: after when AP called the California Primary for Clinton. The 2016 Philadelphia Democratic National Convention firmed up my resolve that my being a Democrat was pointless: even if that meant that was the only way I could vote in a primary.
But the Primaries are acts of attrition to make sure that the candidate with the largest bankroll can make it to the end. Clinton had the big money while Sanders had the popular support in 2016. The fact that the Dems chose the most unpopular candidate was a sickener to me.
But Clinton wouldn't have won the 2016 primary if she had any competition, which is why the DNC rigged the game for her. But Hillary Clinton literally couldn't organize a piss up in a brewery and didn't count on the Electoral College making her plan backfire.
You would think the Democrats would have learned their lesson in 2000, but Russiagate was an example of Democratic ignorance.
Hillary Clinton is a symptom, not the disease. It took Sanders' run to make me see how much the Democratic Party is obsolete.
Anyway, The Green Party was far more appealing to me in how it explicitly addressed election reform and the environment. Hillary Clinton was openly hostile to environmentalists (this too). While some candidates make lip service about the environment, you have establishment democrats doing a Hillary.
So, while the Duopoly Parties like to talk about "Big Tents", you can't have a party with no real agenda. Parties that can include George Wallace and George McGovern aren't going to work. Especially if they are going to run unpopular candidates.
See also:
Democratic Autopsy: the Party in Crisis
The AP's call for Hillary Clinton ruined California's election party--and here’s why that matters
Elizabeth Warren agrees Democratic race 'rigged' for Clinton
Elizabeth Warren and Donna Brazile agree the 2016 primary was Rigged
Inside Hillary Clinton’s Secret Takeover of the DNC
Was the Democratic primary rigged?
Dear Democratic party: it's time to stop rigging the primaries