We're all victims of the repercussions of a two-party system!
Just because you're willing to compromise your vote, it doesn't mean that you're not negatively affected by it. It would be in the best interest of the people to minimize that impact as much as possible, and we can't do that unless the people have better representation in the general election. Two choices selected by private parties is not enough. We don't need a perfect candidate, but you're less likely to pick a horrible candidate if you have a wider selection to choose from.
What you've done is simply create a false dichotomy where people have to make a choice between perfect options and shitty options, but protestors of the two-party system aren't necessarily looking for a perfect candidate.
This is a much more subjective argument than asserting that a seat belt isn't a bad option!