That phrase is aggressively fucking stupid.
Nothing is pure and virtue doesn’t matter. And even if virtue did matter, when you decide not to choose you are just as culpable with the result when it is the worse evil.
You can’t wash your hands if you had the power to act.
Where did I say that you shouldn’t vote? Of course you should vote. That’s a civic responsibility. I’m just rejecting the “lesser evil” argument. It’s used to support and justify bad candidates, and it helps to move the Overton Window in a more evil direction. All of those “lesser evil” candidates helped pave the way for Trump.