Unfortunately, anyone who joins the 1xbit signature campaign automatically receives a negative trust. I think that 1xbit campaign manager would be very happy to accept users with a positive or at least neutral trust to the campaign, but no one wants to risk make their rank worse.
Members who have no history of scams in the past will never be interested in promoting a scam website like 1xbit. The accounts that are participating in the 1xbit er signature campaign have already been tagged for various bad deeds.
So it seems to me that no good intentional forum member would support such a website, which has hundreds of complaints against it.