I think that the only reason to re-write something that is good-enough is to make it even simpler, more clear and, in some rare situations, more general (but what could be more general than text files and pipes?)

Imagines someone in physics would say "this equation is not clever-enough, it lacks linear algebra, let's rewrite it using vector notation". Guys in physics are using vectors because it is the most convenient way to represent some aspects of reality, not because it is clever or popular. Similarly, the mantra should be "simplify" (and generalize).

Anyway, thank god, they didn't bring some nice, little "real-time, non-blocking log collector" written in a nice, object-oriented, modular NodeJS with some nice little MongoDB-powered clustered storage.