Time for everybody's favorite engineering answer: it depends! You have to weigh the cost/benefit tradeoff. But you have to do it in full awareness of the costs, including potential costs from packages being taken down, broken, or subverted. In any case, for an external dependency, 100 lines is way too low of a benefit.
I'm not trying to be effective, I'm just lamenting. Maybe being sarcastic isn't a very effective way to get people to be effective?
