[andrewstuart2]

As always, there are trade-offs between the two approaches. Libraries may be a great approach, but they lock you into the implementation they chose, and the individual components they chose.

With many boilerplate/scaffolding solutions (yeoman, for example), you're given some quick templated code and left to implement logic yourself. You're free to swap out implementations anytime you want, without having to fork the library, or force library developers to maintain overbearingly abstract interfaces so that dependents are free to swap in some other component.

Neither is a perfect approach. The best solution will vary with the flexibility you need for a given system. Anecdotally, the best projects I've worked on were built using a combination of libraries, frameworks, and scaffolding tools. I attribute this to the fact that the tools we used were (at least among) the best at doing one specific thing (render the app, scaffold, build, serve, etc.) and worked well together by not trying to do all things equally well.