OP made it perfectly clear at the start that she had no idea she was marrying someone autistic.
And even if she had, if she'd only had the word to go on, it would have told her nothing about what he was going be like, as there is no trait we all have. Not even introversion, hypoempathy, or inability to take others' perspective.
"Maybe blaming the NT person is an autistic default setting."
Having been abused by several autistic people - and speaking as someone autistic myself - I would say that there is plenty of that attitude around across the population of autistic people.
Whether it's actually higher than in the general population, or in allistic people, is another matter, of course.
It's like the person ends up in a totally defensive/reactive/reactionary mental position, where they're just sitting there waiting for the next attack, whether real or perceived.
And yes, I think the way autistic people are treated by society helps cause that. In that it's demanded of us that we see other people's point of view all the time, but - and ok, I'm talking mostly about those of us who grow up undiagnosed, here - there's no pressure on others to see ours.
So we have to end up reciprocating that lack of understanding otherwise we'd go under, mentally.
But if we don't give every individual person a chance to reciprocate understanding before withdrawing it from them - and/or get nastily defensive with people who don't deserve it - then that is no more or less than another example of abused people becoming abusers.
And no victim of theirs is obliged to put up with that, regardless of where it's come from.
I'm talking in generalities here, OP, and about the thread more than about your situation, because I know you don't want to hear that what's being done to you is abuse. I hope you find the help that works for you, and wish you all the best, however your situation pans out.