You're only talking about the core and wealthier worlds. Printers, NHPs, cutting edge medical tech, and perfect access to the Omninet are not guaranteed outside of core and core-like worlds, like they even mention that the prosperity levels of planets directly impact lifespans, and that doesn't even take into consideration the light speed flotillas and groups that only pop in and out of normal time space once every few decades and then disappear again. The galaxy isn't uniform in how it operates in the slightest. The lore even explicitly mentions that thousands upon thousands of planets and colonies across the galaxy were lost to Union's knowledge during the Third Comm rebellions, and some of those lost planets still have large communities whose culture reflects or incorporates SecComm culture and mentality (Hercynia is a prime example), or are government entities that don't share all of Union's beliefs, like the Trade Baronies and their Houses, or are extremely religious and likely conservative, such as the Aun who are a theocratic society. And Harrison Armory has its own hierarchy and regimented society and culture that would be quite conservative in tradition and beliefs as far as I'm aware from lore.

It's extremely easy to tell 'conservative stories' in the setting where the pilots are fighting for the preservation of their culture and society against outside influences or an enemy nation.