This. Within the boundaries. It is common practice.
Some examples: AP, RAF, SoR, the Asian market which pays per hour instead of a sub, multi boxers.
It holds up if your argument is they're padding the meters.
It doesn't hold up if your argument is Blizzard is evil (that's make any other company also evil).
But nobody said the latter; people argue the former, for good reason. If you look at pure unit sales it is sometimes in your advantage to count them later, and then you just do that.