I swear this person is most likely botting.. Whenever you see a full BoE green hunter w/o any regen farming for hours and not moving out of AoEs etc. it's most likely a bot.
Is there another place to report suspected cheaters?
Best to open an in-game ticket with the botter's details (Name, race, class, level, etc.) and links to any screenshots if possible to handle it in a more private manner. Posting suspected botters publicly on the forums could be bad if the person botting browses the forums; they could see this thread and temporarily stop botting activities.