Macros used for PvP do not give players any significant advantage. All they do is make mundane tasks less tedious. Macros for AFK farming on the other hand, allow a player to farm 24 hours a day. This is an advantage over someone who is not using macros. This is why we allow it for PvP, but do not allow it for farming. I don't see how allowing macros give an advantage to any specific player (whether they donate or not). Nothing is stopping you from using macros for PvP.
Also, people have been saying "if you do x, your server will die!!" since the first day I opened this server. Here we are, 10+ years later and we are stronger than we have ever been. I would try to refrain from making those kinds of statements, because they are unwanted and unhelpful. If you have any specific questions, feel free to PM me on the forums.