I'd be willing to bet that the "vast majority" of Muslims never heard of Harun Yahya. Can you tell me what exactly about Harun Yahya books make for compelling dawah, and how much of that isn't also available on Christian creationist and missionary websites? Kuffar may have good akhlaq, but they have no noor with them. This is not a logical thing. But it happens. People are attracted to the muttaqeen. It's a spiritual thing. Why did the Arabs believe in Nabi ? Because of his perfect akhlaq and his truthfulness, as well as the beauty of the quran. The other form of dawah in the time of the Prophet was through conquest. Anyway, isn't this getting off-topic? Your argument was, I think, that presenting a watered-down version of Islam makes for better dawah. I still don't see how that would work for reasons I already mentioned. PS Unlike the "vast majority" of Muslims, I majored in both philosophy and bio. I think if I didn't have that background, I would probably find Harun Yahya's pseudo-intellectual works more appealing.