This is a possible idea for well-paid engineers. But many minimum wage people trying to get ahead appreciate the time and a half extra pay they get for working Sundays. Why would think we have a right to stop them from getting ahead by banning work on Sunday.
Somehow I think the details of flyby vs orbit were not the intended subject I suspect he wants a generally smooth mission like what Apollo 8 and to avoid any unplanned rapid disassembly like what Apollo 13 had.
It is the same model in all of the EU. Some countries do it very well such as France. Other, such as Germany, not great, but better that the USA "open markets" solution. For proof, compare the price of Internet access in Paris and New York.