Everyone should just ignore their actual incentives. Wow. What a wonderful solution to collective action problems; why didn't anyone ever think of that before? Come on. I don't believe you are that stupid.
They gave facts and you dismiss them with a label because of a little ridicule? Your ending suggestion doesn't even do the job... we can grant you the impossible, sure all those people vote third party. Result, still a loss, and their least preferred major party wins. Whoops, all those voters we granted you picked different third parties. Because as little as they barely agreed on preferring one of the major parties, they agree on a ranking of the "third parties" even less. If you ask for us to grant the impossible, at least make it one that would work.
This is currently a multi-tiered 170,000,000 people system we are discussing. History and mathematics are against simplistic appeals for quick changes. Propose childish thinking, and it is little wonder you get ridiculed as acting childish.