If there's a chance at a productive dialogue, I'll say this (and I'll try to avoid the "venom") —

I respect people's right to their own subjective worldview and to base their decisions (for better or worse) on that view, whatever it may be. When people do that in a binary election, the outcome inevitably reflects the will of the majority. Governments that reflect the will of an ideologically-heterogenous majority are healthy for democracies.

But what I don't respect or condone is people acting in contravention of their own interests for emotional or symbolic reasons. And when people — people with any level of preference in the result of the binary election — vote third party, what results are governments that reflect the will of ideologically-homogenous pluralities. Those types of governments — ones that gear their decision-making toward a polarized 35% — are incredibly dangerous for democracies.

When you vote third party, you risk enabling the candidate you least prefer and you directly contribute to the weakening of the Democratic system itself. And weakening the system ALWAYS empowers autocrats. Always.

Peace.