I just provide a hammer. Users decide whether they're hitting their own nail or the metal one.
The comparison might be loose, but the problem is similar to releasing a browser. Do you prevent users from accessing websites you think are malicious or illegal? Or do you delegate that responsibility?
I was hesitant about releasing the MCP server as open source software, but I hope (1) it proves useful for others and (2) people understand that the authors of the books they're reading need money to eat, live, and support their families.