Using Hamachi for this is their fault for two reasons.
1. Before 1.1 ICO was useless.
2. They made Sins Hamachi-compatible.
And frankly, updating a mod this big to 1.12 is not an easy task. Really, its quite hard and time-consuming, and there are only so many hours in the day, and sleep is necessary otherwise all these modders would hallucinate, pass out, then die. And no-one wants DANMAN to die, because 7DS will die with him.
Personally, I think they hate this mod for a different reason. It makes them look bad. Very, very bad. They show up with Sins, expect everyone to ooh and ahh, then 7DS come along and smashes Sins into space dust with its epic awesomeness.