The only thing necessary for the triumph of evil is that good men do nothing.
Sometimes life has no perfect choices. Not voting was an active choice, a choice not to take action to protect the US from facism. Anyone who didn’t think Trump was bad enough to vote against, doesn’t get to blame others that he won. Their choice comes with responsibility, just like everyone elses choices do.
If they honestly thought both parties were equally bad, then they’re getting what they expected - an untrustworthy political party that doesn’t represent their values. I trust they’re feeling sufficiently vindicated.