I think you are doing a heroic job, but you are also like Don Quixote fighting windmills. Please think about yourself first.

We either need a NIP to store encrypted blob fragments, which will remove any responsibility from you as a provider, or easy community content hosting. For example, right now only three people can post to shaving.kiwi, I know them all, and my only worry is that they sometimes upload humongous files :-)