This is the same problem as why an admin would run a forum if the feds might knock at the door, or why an admin would run a website about cats if the feds might knock at the door. It's an overblown fear.
People do host those things, so clearly they don't need convincing. I'm replying to you because you are the one who said it on Hacker News, and I'm concerned that people might read the FUD on Hacker News and it might stop them from hosting something.
