Strix became less hidden for me personally after listening to The Life Scientific interview with John Taylor [1]. There is plenty of fascinating information, probably because Jim Al-Khalili is a great scientific interviewer. Recently, I recalled it in the context of AI, self-driving, and safety. Strix controllers have a second level of protection if the main automatic shut-off circuit fails. That’s probably why we never hear of fires or other incidents due to a failed Strix controller.
In some sense, what seems important is a business culture that has a mission or meaning to exist other than make shareholders money. I'd wager their employees will absolutely geek out about what the companies do throughout the organization. A lot of corporations these days, once you get above a couple of layers of management, is all fluff. I can't think of the last time I talked to a mid-level or above "engineering" manager in a tech company about any nuanced or interesting discussion about technology.
I'm reading this book because, well, that's the kind of place I'd like to work. I think it makes sense to get a feel for how these places think, in order to really identify job opportunities
Edit: here's a Wikipedia page on the topic https://en.wikipedia.org/wiki/Hidden_champions