Thanks for sharing your experiences.
My parents are long-since deceased but, while they were alive, I never told them anything about anything that went on with me growing up. Somehow I learned very early in life they just wouldn't want to hear it & would simply brush it off or blame it all on me. (I still just keep it all to myself.)
I suppose a lot of us, here on PC, have had experiences similar to what you describe. And that's probably a big part of why people turn to mental health therapists... because no one else wants to hear it. It sounds as though your dad has accepted your sexual orientation though. So that, at least, is a good thing.