There are too many spam accounts being created (as there are no rules against multiple accounts).  So then it makes sense for bad actors to create them and farm the forum by posting low value posts and generating post counts to reach signature campaign limits.  This background noise is damaging for the coin and forum as valuable thread become diffcult to find in amongst the noise and forum performance is impacted by dealing with extra junk.

Just participate in the community, you will gain ranks and then be able to particiape without adding to problems.  There will be other campaigns coming along all the time.