By that I mean that the basic premise being: that the means of (re)creating new technology is lost, the current technology around is treated as sacred and the function marred in elaborate rituals or prayers because they don't know how to otherwise operate it, and to a lesser extent that new ideas or (often xenophillic) research is met with suspicion or outright rejected because it doesn't fit with the religious dogma.
I keep feeling that a similar group is somewhere in Star Trek, right on the cusp of my memory, but I can't seem to recall any specific examples.
TOS has such episodes.
Yonadans in "For the World Is Hollow and I Have Touched the Sky" s3e8.
To a lesser extent the people on Beta III in "The Return of the Archons" s1e21. They don't know how to work the technology, but they fear more than worship Landru.
Maybe the people on Gamma Trianguli VI in "The Apple" s2e5, although I don't remember whether or not they were descendants who lost knowledge of technology and just started worshiping Vaal.
Thanks for the answers. I'm going to see if I can check some of those episodes out.