I find it very hard to find enough topics that interest me enough to comment on. I might get 12-15 comments in a week and I struggle to get that many, so for me we just don't have enough members creating new topics on different boards.
If I am struggling, then I am sure that others are struggling. When we have a lack of participation, lack of new, lack of interest, then everything suffers. Traffic, number of interested companies wanting to advertise here, number of users who want to come here etc.
We need an influx of new members, we need users posting consistently on all boards, we need users keeping topics alive. We need it regardless of if in a campaign or not. Look at how many accounts do nothing unless being paid, that's not really being part of the community IMO.