For a 3rd party to win, another party has to die. (See Republicans taking over the Whigs for their silence on slave states).
So, if you can get on board with that premise, which modern party of the republicans or democrats do you believe closer to destruction due to their voters abandoning them?
Republican voters seem generally happy with the people they vote for unless some specific policy starts affecting them in a way that Fox News can’t sufficiently spin.
Democratic voters seem to be voting against republicans more than for someone they really believe in.
Now, I’m not into incrementalism or reformism, but if you are, it might make sense to try to put as much electoral pressure on democrats as possible to either try to make them massively shift OR to prove to millions of democratic voters that the party would rather lose than capitulate, causing a mass loss of trust in the party, causing change (presumably).
I’m not sure I’d assume 3rd party voters are all aligned on what they want or expect out of voting 3rd party. Maybe some of them think they could win, but I don’t think I’ve met anyone who thinks that.
Tone deaf is pleading to people to vote for those directly responsible for genocide even though their families are being killed because you want to remain relatively comfy in your own country, reaping the benefits of the colonialism you desperately wished was pushed back into the shadows so you can go about your life unaware of the harm you cause.