I've been watching these campaigns for a while and I noticed that it's very still, that's when I had the doubt, if the campaigns were still active? or if that part of the site was simply left out?
The Pledge system is fully operational. It is optional to pledge, most people choose to buy a Supporter or Honored pack in order to support the project and to have access to the game.
The pledge system is if you want to donate a certain amount of money.