[jtbayly]

I can't think of anybody else that has Tor on their computer, or knows how to get it or whether it's safe, or why they should get it. I have had Tor on my computer for years, and I've never heard of 'The Hidden Wiki'.

On the other hand, I know people who have searched for papers and downloaded them from Scihub.

I don't think you know "the audience" for Sci-Hub. It's meant to make the content public, not free for the right people who already know tons of stuff about the dark web.