You were trying to make an answer, but didn't address the issue provided. Outpost problem is a separate problem. This topic is about Camps.
Please elaborate what you mean by NPC ? Because that part doesn’t make any sense to me. On regular word you can have base 65 max, but army level 66. And this offense spawn camps 65 (always two 65), so where you see a difference of 15. As you may overinterpreted is -1 lvl, but basically is equal max.
The recent change in that system allows camps 65 to be spawned by off/deff 63. And it's great for development. When the patch 21.1 will be rollout, approximately perhaps ?