I grew up thinking girls were stupid because I was taught that most girls hate dirt and bugs and RC cars, love pink dresses and gossip and Barbies.
I began assuming very early on that I'd never be able to relate to girls. And that they just generally had bad taste in hobbies and clothing.
But all of these things were socialized into me, constantly giving me reminders of gender messages through family, media, etc. Gender roles and ideas constructed over many years by a society that has a nasty habit of dividing itself.
Most of what the OP said looks to me like the result of these same kinds of social constructions. I feel like you might want to spend some time looking at the base ideas behind each of these constructs and try to tear them down a bit.
When I started hanging out with feminists who advocated being yourself over performing a gender, I found that I could relate. And I came to understand that male being the default is part of a social construct. That this construct and many others around issues of gender serve the purpose of privileging men and disempowering women.
You mentioned you never even thought of the idea of God as a woman. I think some of the things you said that people may have find offensive were probably other things that you've just always thought of in certain ways, and never seen another side to.
There are definitely sexist transmen. And transmen with a history of sexism like mine, resulting from the internalization of misogynistic messages that are pervasive within society. Some of us grow out of it when we learn more about ourselves, some when we learn more about others, some by pure luck, and some never grow out of it at all.
All I knew, before I really started examining these things, was that if being a girl meant you had to like Barbies, I was done with being a girl. And done with anyone who was okay with that definition of being a girl.
Luckily, I learned that that's not really the definition at all.
Though I'm still done as hell with being a girl.