[jet]

We need to remember that the BB edits tend to show things that will cause controversy, therefore they will show the HM's not being nice to Gary rather than the opposite. We have seen nice things too, like David bringing him the ice pack and offering to help; James helping him out of the shower and saying to tell him when he's going to shower again because he doesn't want him going in on his own because it's slippery; Hm's making him tea and sitting chatting quite amiably. It's not all bad.

They are impatient with him quite often, yes, and that isn't nice to watch, but I'm pretty sure that there are plenty more helpful moments too because they can show so little...but they want to make people indignant and FEEL invested emotionally.
I would find it hard to believe that all of the HM's are unhelpful and heartless. The law of averages would just negate that, even if most of them have egos of elephantine proportions, including Gary himself.