> The best way you can contribute to an open source project is to remove lines of code from it.
Deleting code doesn't necessarily mean you're making it simpler. Compressing a 5 line function into a snazzy 1-liner is almost certainly making the code worse, not better.
> Every line that you write costs people time.
This kind of mantra is how you end up with nested ternary expressions and tightly wound functional compositions in imperative languages.