So, the percentage of the forest that are spruce has increased dramatically in recent years? Seems unlikely that they bothered planting their own forests.
You are required to plant new trees when you cut them down.
And there is probably truth in the comment about monoculture. Changes in forestry also moves very slow. The trees you cut down now were planted during WWII.
Supposedly due to warmer summers.
And new planatation replace spruce by larch or leaf trees.
Luckily they don't seem to affect pine trees, but they have their own climate expectations.