No, global granule loss isn't considered to be hail damage. The shingles are basically wear items and granules are expected to be displaced over time. However, if you have specific impact marks where granules have been removed in a circular fashion that exposes the bitumen layer (tar), then that could qualify as hail related damage. Basically circles that expose the black part of the shingle, that aren't blisters.
ETA, you can have both issues at the same time. If you'd like to post some photos of things you're curious about I'd be glad to give you some input. Really can't tell the full story without being there though.