The prime motivation for the “sheeperal” leftist is to feel good about themselves as “good people”.
This is why no amount of logic penetrates.
This is why pointing out failures in the policies they support is treated as a personal attack - because to them, it is.
Yes, it is a spiritual battle. That’s really the only thing that’s real.
Well, even they might be able to be reasoned with in some cases.
You have to get at the root: what do they worship.
You can graciously share with them that people make lousy gods but wonderful servants. And don’t pre-judge the outcome. Might or might not gain ears, but it could plant a seed. And if they never listen, it is the witness that will serve against them.