You got it backwards when you said "fitting together" is a subset of "creation." Creation is fitting existing unused materials together into a more usable form. I believe we should encourage people to fit together existing programs rather then encouraging people to build stuff "whatever the language, whatever the library, whatever the framework".
If everybody uses whatever framework without concern for compatibility it will inevitably lead to enormous bloat. I have no problem with getting things done quickly to fulfill non-software needs. However, when it comes to software one of our most important needs is to reduce bloat by encouraging sharing.