Summarization:<p>- South East Asian Royalty adopted Islam due to being likely swayed by rich Muslim merchants + missionaries and then gradually became popular.<p>- South East Asian Peasant populations without strong Buddhist/Hindu religious influences adopted it to fill void of previous Animist religions or even just Animist traditions.
Java used to be Hindu, as evidenced by Borobudur and other monuments.<p>If you're working in Indonesia and your boss is Muslim and you're not, the fastest way to get ahead is to convert.<p>That plus other one-way traps reinforces Islam as a dominant religion.
Who is the author? Is this accurate? Is it one guy's theory, a fringe theory, one of competing mainstream theories, or consensus?<p>Certainly Reddit and the comment's length are not indicators of accuracy. They are indicators of an author with a lot of time and motivation, which could be good or bad.