Yes, in a long-term scope it will never work.

So, first you said it can't work. I provided an example of it working. Then you moved the goalposts and said it's biting Republicans in the ass. I pointed out that they gained power, not lost it. And now you've moved them again and said it can't work long term. I didn't say it needs to.

If it's vital to the very continued existence of Democracy that Trump loses this next election, why are we not trying to get every vote we can, even from people who you consider irrational? It certainly never stopped the Democratic Party from moving to the right to court the few remaining irrational moderate Republicans who stay with that party even after what it's become. Why is it always the left that has to think about the short term when we're being screamed at to vote for the candidate who will maybe consider temporarily forestalling fascism because eventually the party will totally start listening to anyone to the left of Manchin? Why does the party never have to think about the short term and court people who it considers beneath their contempt so that they can forestall fascism?

That said, in the context of presidential elections. One should NEVER consider 3rd party candidates until one of 2 things happen. First past the post voting is replaced with something better. Or said 3rd party has a presence in state or federal legislature of 10% of US states.

At no point have I suggested voting for a third party. To the contrary, I think the Democratic party should work to get those votes back, because it needs them. But for some reason, that never works because of wherever you decide to put the goalposts this time.

Criticize Democrats all you want.

Sure, if you happen to like wild accusations.