I mean that's cool and all but that's not really a debunking of biblical creation or sexual order if you take it at what it says and not what traditional religion tells you it says. There wasn't supposed to be death, so animals shouldn't have eaten each other. It also describes something like an asexual heaven. So even if homosexuality isn't in the eternal perfection, everything now is imperfect so it's just like everything else.
Where does the Bible describe an asexual heaven? Do you mean because Revelation says the only people who get to go to heaven are a small number of men?