I am neither a code writer nor privacy freak, but your social-media platform will provide an alternative to the funding models used by the “big boys”. That alone is engaging to me.
I already pay for subscriptions to music, writing (Medium, for instance) and a spate of online versions of major print-media. Why wouldn’t I pay to use a more-secure social-media platform?
Not just because I always check to make sure I still have my wallet when I see his name or a photo of Zuck, I believe your platform has purpose and promise.