Not really. I've got a Master's in Middle East History with a focus on Islam. While the Vong may have been directly inspired by Meso-American cultural influences, they share many similarities with radical Islamists--from their worship of sacrifice to the glory of martyrdom to the fixation on blood. In fact, re-reading the NJO years later, I found the similarities between the Vong and certain sects within Shi'a Islam to be fairly jaw-dropping. It's not a stretch at all to compare the Vong to radical Islamists.