Well, first off we've been defending the last few updates. Not just detagging (which we did at minor today primarily). Defending regions would, by definition, stop a raider from getting control of a region..thus not allowing them to destroy, if that was their intent at all. So it actually does, in a direct way.
But the point that Sov is making here is that we'd -love- to try to liberate the regions that TBR and TBH are holding. We just..can't get the numbers for it at update, especially not every update. So..we do what we can, when we can. And we have fun with it, and we defend and detag. It's enjoyable and rewarding too.
EDIT: Frakking puppet! This is Lyanna Stark.