[Skeuomorph]

> You seem to be saying the he's very talented, so it's likely not a lack of ability, but a lack of will.

False dichotomy ... If a developer does quality work as claimed above, its unlikely he's missing deadlines from lack of will, wasting time, or laziness.

Thankfully the post continues by offering more likely reasons:

> there are blocks in his way preventing him from executing ... feature creep, unexpected maintenance, infrastructure problems, people problems... figure out how to help fix those problems, rather than just hand-waving as "missing deadlines".