Jews will tell you that the old testament is entirely written by Moses, it definitely predates Jesus.
I had started to write a long response to this but ultimately the point would have been that you are, somewhat bizarrely in my opinion, taking a non-revisionist view to the most revised, most translated and most rewritten book in history. Currently theological debate is whether or not the new testament condemns homosexuality or not, it can be interpreted to condemn pederastry and prostitution only.
It was the same with slavery in the late 18th and early 19th century. A book written for a predominantly enslaved people (early Christians) wasn't anti slavery because it was just part of life at the time.
Whilst churches should officially stop recognising different books within the Bible rather than simply ignoring them I think there's far more damaging things that are ignored today and are definitely more worthy of non-revisionist views. Like there was a bit of push back against statues last summer and a walk around parliament Square today would still show you a eugenicist, a leader of an apartheid regime, a pedophile and multiple partakers in genocide.