my original comment could be distilled down to “sure would be nice if treasonous voters supporting treasonous, disqualified candidates were also penalized for being treasonous”

And I completely disagree with that notion. Voting for a treasonous person isn't treason, it's a wasted vote because a treasonous person is ineligible to hold office.

The only crime you could commit when voting is fraud, meaning you're voting more times than you're allowed to. You should be allowed to cast your vote however you want with no fear or reprisal, and it's on you to make that vote count.