Peace,
He gets turned around a great deal more than he should, but Maher was intentionally trying to obfuscate his argument. What he should have said more directly was this:
1) Anyone would have been better than Trump; this is so obvious that it's hardly worth mentioning
2) The Democrats served up a TERRIBLE candidate, who ran a TERRIBLE campaign
3) In addition to this, they actively subverted the Sanders campaign to ensure a Clinton victory
4) Despite the fact that they are almost wholly responsible for the Trump presidency, they continue to blame to people who were unenthusiastic about Hillary