Truth and cultural dominance are not mutually exclusive in this case. Personally, I want both. Or rather, the elimination of the cultural strength of monotheism. And the best way to get that is by promoting truth, which corrodes Abrahamic claims.
The literal truth of much of the content of the Bible and Qur'an has been disproved ages ago, but it doesn't matter. Plenty of Christians and Muslims take it as allegory. The Abrahamic faiths will, I think, last for many millennia yet, at least.