For just about any given type of application, you'll find a whole bunch of different bundles of code (be they libraries, apps, or something else). This happens

For just about any given type of application, you'll find a whole bunch of different bundles of code (be they libraries, apps, or something else). This happens with JavaScript libraries for the same reason it happens with the others: they all suck, but they suck in different ways, to varying degrees, for different users and use cases.