I never said anything about validity. Let me quote myself:
This is a very practical matter. You feel like voting, you pick either your candidate or the best option that works. You’re not happy with that, don’t vote; but then you take responsibility for your (lack of) action. It’s as simple as that.
I didn’t mean to imply all people treat their vote as an endorsement. That’s my mistake, I wasn’t clear. I was saying that a lot of people vote tactically and do not treat their vote as an endorsement.
You can have a different posture, but the fact remains that people are complex and they can (and should) switch between committed voting and tactical depending on the situation. If you don’t take the tactical approach, then it is reasonable to hold one responsible not taking part in the voting process.
This is not about a “moral high ground” or some deep commitment to utilitarianism (which you somehow turned into a bizarre rant about electing Hitler).
I am talking about a practical, real life evaluation. Of course many people vote based on emotional reasons, but that doesn’t mean tactical voting is not extremely common (perhaps even a majority of voters).
And the fact remains that even people who have a strong emotional motivation can still be willing to make tactical choices. It’s not all black and white like you describe.