[bollockitis]

There are pros and cons to both approaches. If I see a junior developer trying to reinvent the wheel, he's probably going to build a pretty shitty wheel. The whole point of using dependencies isn't laziness or cowardice, it's leveraging others' work to save time, energy, and potential headaches caused by subpar custom implementations. Of course, that doesn't absolve us from learning the guts of our dependencies, but chastising developers for avoiding unnecessary work is absurd. The key is in learning when to import and when to DIY.