Frankly, its fine more often than we may care to admit.

As the parent comment suggested, UI elements are a great candidate for this. Often very similar (how many apps have a menu bar, side bar, etc) and full of boilerplate. And at the rate things change on the front-end, it's often a candidate for frequent re-writes, so code quality and health don't need to be as strict.

It'd be nice if every piece of software ever written was done so by wise experts with hand-crafted libraries, but sometimes it's just a job and just needs to be done.