The thing they want to conserve is the way society is, or rather, the way it was back in the mid-1900’s.
I don't even find that to be true. They adopt technology based on the whims of advertising they consume. Donald Trump was king of Twitter and they ate that up. They just don't follow what they say. They say they hate California, but consume every bit of technology (like Twitter, Apple, Disney, sports teams) they can that comes out of it.
Try without being logged in, incognito or private and see if it all appears. Almost always this problem comes about when someone fiddles with their language settings and Lemmy doesn't show the rest. Or some other setting like not showing already read posts. The apps really need to say "5xx posts not shown due to your preferences".