Jiroc is not a modder but a youtuber/content creator/promoter of the game.He owns several servers and invest a lot of his time and money to run them and keep them fun to play. If i understood correctly he was one of early game testers who remained loyal to the game for years. IG is familiar with his work and developers sometimes join his servers. Just browse his YT channel and you will see interviews with devs.
I highly suggest to everyone who wants to know more about this game and/or to pick up some good ideas to subscribe to his channel. You will find a lot of useful informations there as well as all of the latest game related news (including detailed descriptions of new patches and hidden patch notes).
He is the only one that kept me interested in the game for such a long time. His channel is inexhaustible source of great ideas and fun projects.
I missed the kick-off of the first season on his servers and didn’t want to join late (which was a mistake as i missed a lot of fun). Now I’m joining for the second season for sure. It looks fantastic and I believe 10$ is a fair price to discover a whole new dimension of this game and to play with a lot of fun and friendly players.