Voting for third parties is tied for the second most effective way to increase harm. Without changes to the electoral system (changes I personally do believe are possible, despite your defeatist attitude), third party votes will always be spoiler votes. The only way to more effectively increase harm is to vote Republican.

Voting for Democrats isn’t a good long term strategy, but it’s the only strategy that has any hope of actually keeping my trans friends around so they can see the long term, and it’s the least bad of all the options right now. Voting third party, or not voting, is effectively a 1 vote swing away from the Democrats to the Republicans, whose policies are pretty clearly to make the genocide in Gaza worse and to start other genocides and forms of suffering. Voting Republican is a 2 vote swing towards that.

So I’m choosing the least bad option, and the option most likely to open up better options down the line. You’re choosing an ineffective option and then pretending to have the moral high ground even though what you’re choosing is ineffective virtue signaling.