What logic do they think they're displaying here? To describe this 'logic' as idiocy would be incredibly offensive to idiots everywhere. This is like punishing someone who's gained weight on a diet by force-feeding them cake.
I think anger is so much easier than pain. There's always temptation to funnel our energy into anger because it's clean and uncomplicated. Anger has a clear target and all you have to do is lash out at it or shun it. With grief you have to admit the loss is permanent.