No, Aion X Emu is actually just moving to a new host. Crash (one of the founders) did indeed get pissed, but he's just taking a breather. He has a family to think about above anything else. All work on AionXEmu itself will still continue. Forums are just moving to a new host.
I've spoken to Crash myself and he's more just taking a step back to lighten the load on himself due to doing so much of the work himself and getting nothing but crap thrown at him by people who don't understand what making your source code open-source means (or some fans of those projects that are jealous for no reason).
Yeah, this is basically incomplete 2.5 code. It's mostly for the items and client, but it's very buggy. I don't recommend it for everyday use. As for Aion X Emu, it's still going strong. I fully support it and any other projects that help each other (AXE, Open-Aion, Aion-Core, etc.)