When the lesser of two evils becomes lesser of two genocides we can either accept this is a stupid strategy that does not and has not worked across decades, or double down and accept everything that comes because of the strategy, like Trump.
We are civilians, we do not get to change the system, we don’t even get to recall our federal reps after the election. We can vote once every year or so and that’s it. Either keep doing what got us here or try something new but your power ends at the ballot unless you have the time and money to basically stalk politicians.
There will never be a good time to abandon lesser evilism, and there will always be an evil that could win. In fact by nature of lesser evils, the winner must be evil. The best time to break away is whenever you can convince yourself to do so. For many people genocide is a hard line and they are realizing this. It’s hard to fault someone for trying something new when the old way bore genocidal fruit.