Different people. From what I can tell there were only a few mods on r/Melbourne that are still actively moderating, and they were spending their time on a Discord group.

Lodion (who I believe is in Perth) set up this Lemmy instance with all the Australian groups set up, I wandered in and saw a familiar looking group & a daily thread, and put my hand up to moderate. If you look at the older posts there is some discussion there about what people want from the group that I used to write the community guidelines - that and this daily thread is probably the best way to see what the vibe here is. 🙂