Counterpoint: Public funds pay for software used by military and intelligence services. Certain information becoming publicly available can lead to real harm. (e.g. A self-assessment on a country’s own weaknesses, methods that spies deployed abroad can deliver information back, etc…) How do you manage the infohazard risk?

all software paid for by public funds should be open source.

Should probably be changed to: all software paid for by public funds should be open source so long as their is no or low foreseeable infohazard risk.