I deeply respect and admire Torvalds, but in the corporate world, the hypey/trendy thing helps tech people getting important changes approved by upper management, at least in my experience.
I work in a tech company whose culture is primarily driven to productivity (read: getting business features delivered using the established stack and tools, as quick as possible). There is certainly an upside to it, but it produced a mindset in wich, in the face of a new problem, developers didn't even think of the possibility of bringing another tool to the toolbox. I mean seriously, to the extent of building their own xml parsers.
Only recently we have been able to assemble an architecture team (i know, i hate the concept) to actually find adequate solutions to the bigger issues, and the hype is sometimes a powerful enabler to push things forward.