Currently they don't have any running promotion since maybe they already feel that running a campaign doesn't give any positive result to them since the community still avoid and they are just wasting a lot of money for running some ads here.
It is also a thing to determine why they stop promoting in the forum because it is not clear why they stopped running their signature campaign in the forum. If it is about the forum only, I think 1xbit will not be profitable. This is because the forum has tagged them for long and their reputation has been bad right from beginning in the forum. So it will be true to say that they were not generating any lead from the forum.
But there is a question then, which is whether or not does forum campaign help to index a casino site in the search engines. If the forum actually helps, that should be were 1xbit was leveraging to exist before they finally exited the forum.
My guess is that they simply realized that it was profitable for them to advertise here anymore and decided to move onto other places and communities where not some many people were aware of their infamous reputation. Here their casino is a lost cause, which is a good thing.
I expect this thread to be blocked eventually and people can move on, even those who lost money somehow need to find piece and try to recover by themselves. Though, this should not mean we are supposed to forget what happened and let the newbies around here to be ignorant of the history of this casino. Regardless whether 1xbit decides to return or not, it should still appear in our lists and threads about unreliable, shady or scam casinos, for the sake of warning people in the future