The thing is you can try to explain that it was not you that was
sending the information, but unfortunately it went through your computer which makes you partially responsible.
Not in Germany, at least it shouldn't. §§8-10 Telemediengesetz define something called "Providerprivileg" which exonerates any transport hops from prosecution, similar to how the postal service isn't responsible for any drugs they transport.
Additionally, thanks to the CCC [1] a lot of law enforcement actually knows what TOR is, that it's only a transport, and thus usually the investigation into the Exit operator is pretty limited... unless they find something else.