Voting doesn’t always mean you 100% agree with the party you are voting for. Sometimes it means that you vote for the least bad option to prevent system collapse. I say this as a South African whose only voting goal for years was to prevent the ANC from getting a sufficiently high majority to be able to change the constitution. We came insanely close a few times but made it through.
Not voting in the US election was a choice, a choice not to stand against Trump. So anyone who didn’t think Trump was bad enough to vote against, doesn’t get to blame the GOP for what’s happening.
All that is needed for evil to triumph, is for good men to do nothing.
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.