It's not post-hoc if it was telegraphed before the election. I knew it then, as did everyone with a modicum of interest in current events.
Regarding your other points, I'm not sure I have to, but here goes:
1) I'd be keen to hear how they voted for the least worst option, on specifics.
2) Not voting is voting for whoever wins in the described two party system. At least that's how I see the trolley problem.
3) Then they weren't paying attention, but at least they can be honest when they're affected personally.