Yeah. Based on this trailer, they changed things around from Annihilation the book. Heck, according to this interview director Alex Garland didn’t actually have a chance to read the rest of the trilogy before writing the screenplay and he doesn’t seem all that worried about that.
I’d be bothered by that, maybe, if I had bothered to read the books. Since I didn’t: sure, Apocalypse Now in the bayou with an all-female team. Have everybody go nuts amid the mutations. Works for me!