The reason is because Bungie actually likes how polarized this community is. Whether it's dealing with TTK, console exclusivity, etc. Anything that would prevent people from banding together for a cause. Because once the community is united, they can actually cause significant harm to the business, such as not spending money on future products. So, why not just go for the kill and not order TTK? Baby steps. You need to be influential if you're going to win a war.