It's not because most people don't take the time to read them, that they're not important documents.
Besides, if you're investing in something, without having read the white paper, you're just throwing away your money...
I think it's a great initiative, it's good to have a public back up of these white papers.
Also handy for when projects decide to change their whitepaper without notifying everyone, just so there's always an original public copy available.