William Weber, a LowEndTalk member, was raided by Austrian police in 2012 for operating a Tor exit node that was allegedly used to distribute child pornography. While he was not arrested, many of his computers and devices were confiscated. He was later found guilty of supporting the distribution of child pornography through his Tor exit node, though he claims it was unintentional and he was simply supporting free speech and anonymity. He was given a 5 year probation sentence but left Austria shortly after. Though some articles portray him negatively, it is debatable whether he intentionally supported child pornography distribution or simply operated in the legal grey area of Tor exit nodes.
It’s not different, and many countries have established laws against “drug tourism”, “sex tourism”, “abortion tourism”, or other stuff punishable under their law that people would seek to do in other more permissive countries.
Those laws often include punishments for the enablers, so while Iran may not be able to punish you in your own country, beware of ever visiting Iran, or any other country whose laws you may be helping people to break… or getting doxxed for some “extreme law defending enthusiast” to pay you a visit (see cases like Charlie Hebdo).