IMO, the only significance that this rise in the number of those claiming to be anointed has is that it shows that the grip of the GB and the Society is loosening. Fewer people are willing to simply let their experience be determined by what the Society says it must be. That's all. I don't see any further significance beyond that.
In a different religion where they accept the revolutionary idea that the New Testament actually means what it says for all who read it (an alien idea to JW's), then the vast majority will have the 'anointing' experience, in accord with their expectations, and because it's 'allowed'. The JW's don't because they don't expect it, they don't think the Bible applies to them, and their leaders basically say it's not allowed - so it rarely happens.
I don't see it as God changing what he's doing, but as fewer JW's letting the GB and the Society stand in their way and prevent a 'spiritual experience'.