There are a lot of players that do not have a forum account, nor wish to have one. They simply enjoy logging on and playing the game without having to deal with forum RP. We didn't want to exclude this group from enjoying the opportunity to build a Core One base for themselves.
After building a POB, they would then be left with a choice. Either create an account in order to upgrade their base to Core Two, or be happy with the Core One base they had.
Since no RP is required to build a Core One POB, it seemed fair to not require RP in order to destroy it. This has the added benefit of allowing the community to remove ill placed bases with relative ease.