About this policy, let me explain a bit as I've already talked about it with a few guys...
If you create a hack that infriges a company's copyright, you are responsible for it, you made the decision to do so, you chose the distributiuon method and added notes about your patch. If the company sues, it is on you and you know what you made.
Now, if someone takes your hack, and, let's say for example, made a X-rated game from it, or worse, added child abuse, you could be sued because the second patch includes yours! You could go to jail on pedophilia because your work is on that second hack. (I am using an extreme example for you to understand the basis of the problem).
That is the reason, and one I perfectly understand. That is why people are making separate patches, in some cases, ones that do not change the copyrighted material at all, like adding save or map to the game, and other that can be mixed with this one.