I agree to an extent. In corporates etc. you're going to be building from scratch because these things won't fit in with guidelines and it's easier to build from scratch. However, it's good for quickness when working on personal projects. That being said I do find this one a little overkill and more than what you'd probably want without creating custom builds etc. also some of the behaviour and styling doesn't work as I'd assume. For example, drop down isn't drop down, it's more like drop on.