As a little digression from wondering how badly does a vaccine have to fail for pro-vaccine people to be able to notice it has failed, I have had a thought with relation to my heuristic of God as the perfection. Now, one of the values of this heuristic is that secular neoreactionaries, libertarians, evolutionary fitness types who have figured out hallucinogenics aren't necessarily going to lead them in the right direction...
And then, of course, it could be helpful to actual Christians. Case in point, this unforgivable sin against the Holy Spirit.
The basic idea is that God is perfection, and the Trinity is God becoming man so that man can become God, or more simply, so that we can achieve perfection.
So, the blasphemy against the Holy Spirit is against it's inherent purpose- to perfect.
In the biblical case, the Pharisees had just got done saying Jesus healed people via Beelzebub rather than God.
It is important to point out this is a case where the Pharisees actually thought something had happened, and the people thought something had happened, and it wasn't all this wishy washy stuff we see now, where a lot of people claim to be doing something in the 'spirit' and they like to shame you if you start thinking maybe they are full of something else.
No, there was clear evidence in the direction of perfecting, and the Pharisees misattributed it to the devil.
It starts to make more sense, because in some ways, it isn't a 'moral' sin. There are plenty of moral people, whether Christian or not. Additionally, consider the sad state of Christianity. So many people seem content to be under the authority of men who need correction. Rather than a bright line between those who allegedly have the Spirit and those who do not, we see something much murkier.
I think it comes down to those who seek perfection being more in accord with the Spirit than those who do not.
As similar idea, but along a different axis- eternity. Why try for eternity? Why try to extend your life in anyway? I've heard this line of thought before- smoke 'em if you've got them, because we'll just get to heaven a little faster. But even in the erstaz versions of the story, eternal life figures prominently.