Maybe it's just his day job.
The unexpected complexity may come from the fact that he's much more a cultural, rather than a political, writer. He is certainly not "hating on" Palin. He is a fairly recent adult convert to Eastern Orthodox Christianity, and he takes the faith and morals and the sacraments of this faith seriously and literally. Maybe more so, possibly, that adherents of other faith communities who see it as just a symbolic thing.
So if Palin has managed to treat with a certain rhetorical levity both torture and the Sacrament of Baptism, she would be well advice not to do so again.
I am certain Dreher respects Palin's excellent qualities as a woman, as a conservative activist, and as a pro-life advocate.
If you look at the more recent posts on this thread, you will see that you are correct, he is liberal, and has hated Palin from the beginning, leans Obama, and doesn’t vote republican.
He thinks Obama is too “conservative” and too “republican” in some areas, and of course a conservative like Palin, is off the charts to a liberal like him.
From Mondale to Obama.