Also, more signature campaigns won't automatically reverse 1xbit's negative reputation which is why I feel that this particular strategy is silly.
Almost everyone who joined the 1xbit signature campaign already had a red trust before, so we could not join other campaigns anyway. In practice, nothing changes, so I don't know where you got such ideas from ..
Reputation was bad before joining the 1xbit signature campaign. Because red trust gets a user only if he is involved in some kind of scam. This means that 1xbit has accepted those users into their campaigns against whom there were already serious allegations, and is paying them to participate in the signature! 1xbit is wasting time in such activities without properly resolving the allegations against them, if those allegations were resolved then their reputation would increase.