I agree. But I would make the distinction between timing and duration.
In your example with the bearings pressed in too far or not far enough this would affect duration. And it could possiblly volume in two different ways.
It could affect volume if the misalignment causes a restriction that is smaller than the passage sizes that supply oil to the bearing.
And it will affect volume if the misalignment in the block causes a front to rear misalignment with the camshaft oiling hole because the duration will be decreased.
And to complicate it even more if the the total area at the camshaft to bearing interface is smaller than the misalignment at the block to bearing interface it now becomes the point of restriction causing less flow and not the misalignment at the block.
In the second example where the misalignment is at the block and bearing where the bearing is over rotated, if the misalignment is a restriction point smaller than any where else in the system it could reduce volume. It also will change timing. But it would not change duration assuming the bearing hole and camshaft hole are lined up front to back.
When you think about the misalignment between the cam bearing and the block, it only becomes a restriction at the brief moment when the camshaft hole and the bearing hole are rotated to the point of alignment where the uncovered area is larger than the uncovered area at the bearing and block misalignment.
I coud be wrong about any part or even all of this.