You would be correct in an utopian world. There people would vote for who they want instead of who they don't mind.
But this is reality, and because of the semi-2-party system of the US, voting for any third party is just the same as not voting at all.
If you want to change the system, hold rallies between the elections. But don't use the elections for that. Or you can be sure you will get an other trump.
And how can your long-term plan work if everything gets fucked up so much short-term, that you will never get to the long term plan in the first place?