This is the exact same way I feel every time I see someone suggesting to vote third party.

It's the same thing. If you don't vote - voting third party. It's the same result (you're throwing away your vote) except with the third party you actually waste your time filling in the form.

And by the way, the conservative vote already has a third party that's splitting the vote/losing elections. So this would actually be a fourth party splitting it even further, guaranteeing that the left continues to win with less than 50% of the vote.