If anything the antichrist will promise to wage war against the gays to gain a massive following of Christians, since that's what they all seem to want. I think there are already people like that; John MacArthur gives me really creepy vibes, and he's the most popular preacher in the world.

The true Bible didn't used to say anything about gay people, but now it does because people changed it. Several verses are mistranslated on purpose in nearly every single modern Bible to make it condemn gays instead of whatever it's actually talking about. The only real mention of homosexual behavior is in Romans 1, and it just so happens to be part of a known interpolation. And even it doesn't quite condemn gays, it says that bad people are punished with uncontrollable homosexual attraction so that they suffer social shame.