WTNH uses Parkervision. I think it's just one or two people who do everything...direct, TD, run camera, roll the video, run audio, etc. I'm not sure what system WFSB uses. WHDH uses some kind of automation/server-based system as well. I don't know what the other Boston stations use. I believe WLNE rolls their video via some kind of server, but still have humans to direct the show. WPRI still has tape operators and human beings to direct and run the switcher. I don't know what WJAR does.
The networks aren't using the automation, because the strong Unions at the Network level won't allow it.