Step back a bit. It is not like you are saying it causes overloads. I hear no direct harm. Dad is trying to do his best for you, and seems reasonable, yell at him he yells back, he does not hit you or lock you in the celler for a week.
Not wanting to go to church is fairly universal at your age. The parent's child starts getting their own identity, but is still a dependant. It takes a few years to change from a child to a free standing adult.
I do not think religion is the issue, but family stability. It is in your best interest to have a stable family. If dad wanted to go fishing every sunday morning, and you tired of it, I would say, it is what you can do to make him happy, an hour a week, so do it. The old man has given his life to give you food, clothing, shelter, education, and a moral framework.
If you are 15 it is 150 hours of community service spread over three years. It maintains the family bond, and your father's sense that he did things right. In a few years you will be an adult, but we lie about that, 18 is not all. You will be free to make your own choices, and they will still be your family for many years to come. He has raised a daughter for five three year periods, one more to go, and you are here on WP, so he did have to work harder than most.
You seem an observent and high functioning aspie, you will transition into life well, there is still that four years at the university. There is even hope your sister will develop better tastes in music and entertainment, we can only hope.
Part of growing up is adding to family stability, mom defers to dad because everything has worked so far.
Churches have interesting roof framing, well done interiors, and you can spend your time observing and learning. Someday when you are fully mature, your parents will become dependant, things reverse. you will have a life, they have one church community. See things as they are, it is already time for you to care for others, the price of growing up.
My girl just turned 18, university in the fall, she treats me well, and we both feel we did well. Now that she can vote, we are closer than ever. She can do anything she wants, so she gave me a hug and said, "You were always there for me." We won.