

As with all things, Starfleet of course has the have the unstable, bleeding edge version on their spaceships. I’m sure Vulcan holodecks are much safer lol
I do think we’re supposed to recognize that Rom is actually very skilled though. We see it through Nog’s opinion of him, and how well he does after he joins the Bajoran maintenance crew, despite his first initial awkward interactions. And restrictions often improve creativity in real life, so it makes sense to me that he’d have some unique skills, compared to engineers from Earth, who are used to being able to requisition anything they need eventually. You even see some of it aboard Starfleet ships, like when Geordie meets Leah Brahms, and has to defend all the changes he’s made to the warp engines on the fly, or in the Upper Decks episode of Lower Decks, when Billups is teaching the ensign about maintenance.
It’s part of the whole idea of the show, that these other people, even ones we might not initially get along with, have valuable perspectives. “Infinite diversity, in infinite combinations.”
I think you mean Cordry rocks. Their non-centrosymmetry disrupts the charged leptons in the isolinear pathways of the main deflector.