Running tor exit nodes is a legal liability in many western countries already, so "it's only as risky as tor" is small consolation. You might not get convicted

Running tor exit nodes is a legal liability in many western countries already, so "it's only as risky as tor" is small consolation. You might not get convicted ultimately but the process of explaining why your IP showed up on the access logs of the child porn site they just raided is a problematic enough prospect to scare most people off running an exit node