I work for a television station and I think others in the industry would back me up on this (Doogie?)...
I thought BTN handled the Kill sideline situation tastefully. The clip I have seen on YouTube shows BTN on Kill for several seconds but once he started to show signs of the seizure, they quickly switched cameras. While some live broadcasts do have a several second delay, it's tough to catch it and properly cover inappropriate content.
I think we all want to see an injured player when he's down so we can try to investigate what the injury is. However, things like convulsions, open wounds, etc are too much. Until Coach Kill started to move erratically, BTN's producers likely didn't have the knowledge of his medical history and had no way to know what happened would happen.