I wholly understand, but to be fair this section is VERY vague and can easily be mis-interpreted;
Lots of games today are 18+ and feature mature content which could be considered several of these even though no ill intent is meant. So if they use your software to generate the terrain, they could possibly be subject to legal action?
Like I said, it’s very vague and I wholeheartedly agree with him on this particular point. Take GTA V for example, would they be subject to legal action if their terrain was generated using your software? Business corruption aside, talking strictly from a EULA standpoint here.