Agreed, safety and essential infrastructure should probably not be open source. That said, the main points of infrastructure access and configuration are probably larger issues at hand over the actual systems source itself.

As to TFA, I have mixed feelings. I'm actually more concerned about research and related patents and data surrounding publicly funded study. I do feel that Open-Source should be given some level of preference, but not that all publicly funded software should be open source itself. It's a blurry line imho.