It's not defeatist at all. It's how it is. Voting for a third party in the US is throwing your vote away. The only hope is that people campaign hard for a third party and everyone abandons one party for another. That's the only hope and that's still a 2 party system. It's just a new party taking the place of the old one. Even then it's an impossible task that won't happen in the next 10 years.