I have an acquaintance who leans hard Libertarian.
Lots of complaining about the "D" and "R" voters---loves to point out the folly of each political party---and he's not wrong, BUT---
He never offers a viable solution. I go to the Libertarian site(s) and the same thing.
If a third or fourth or fifth party is ever going to matter, it's not on the voters to "just not vote D or R."
It's on those parties to show us they can work, in meaningful ways to dethrone the two powerhouses.