I wasn't actually aware of this article on Polygon when I wrote my post this morning. It seems that timing is everything. A friend on twitter also mentioned that in his experience online communities can vary wildly in the levels and acceptance of abusive behaviour. I think this probably matches most of our experiences and it will always be the case that people of a particular nature share the same interests, ideals and viewpoints.
The examples given are pretty extreme in terms of behaviour and the cases of suicide are obviously the most extreme of reactions. Most of our experiences will fall somewhat short of these examples, most of us probably never have this kind of vitriol directed at us, and only see it being aimed at others. We shouldn't be less outraged just because it's not happening specifically to us.