While it is true that most early astronauts were aviators, specifically test pilots, it's also important to consider that it was the case then as it is now that the US Navy operates more planes and has more pilots than the US Air Force. Just percentage wise, that would edge towards more Navy pilots who use the naval terminology in their ranks (the Mercury 7 were 4 Navy pilots, 2 Air Force, and 1 Marine I think, though I could be wrong). I would assume that the culture would skew even more Naval as space flight progresses as early spaceflight was a couple of guys in a tin can to larger scale craft.
Another weird quirk too is that common military rank terms like "captain" and "lieutenant" don't line up between the Navy and the others (at least in the US). So the OG Star Trek guys would be Colonel Kirk and Captain Uhura under Air Force terminology, and that just sounds weird
I don’t know, it could probably work, America is the outlier for their election seasons. UK elections are held 5-6 weeks after Parliament is dissolved. The 2022 French Presidential election was held less than 2 weeks after the polling date was announced. Comparatively, the USA’s 7 months to convention, 10 months to election is a lifetime. You can do loads in 106 days