The facebook platform is also worthless for structured discussion. They way that comments are handled is a hot mess for cohesive conversations across the group. Instagram has value as a showcase platform, but users can do that on their own. Overall I'm indifferent. I spend a LOT of time looking at e9 pictures, but few of them are ever on facebook or instagram.
I'm not a late adopter. I have a facebook account and I'm a member of the e9 group. I just never post. I also have an Instagram account.
Facebook is nice for vendor pages, especially vendors that don't have the bandwidth to maintain a stand-alone presence online (aka maintain a website).