That's a good analogy and what people thinking "how do you think all the dead money and void years will magically work itself out" don't understand. It works out in a world where that cap rises at +13% per year.
You'll still always have to balance the draft and free agency over the log haul. Sports Illustrated just did a ranking of the best drafting teams over the last 5 years that had Miami at #11. So by this objective measure, Miami is still an above average drafting team. But their grading was a little odd IMO.
- Each first-team All-Pro season: 5 points
- Each second-team All-Pro season: 3 points
- Each season as primary starter (per PFR: 1 point)
- Each regular-season win: 1 point
- Each wild-card win or bye week: 2 points
- Each divisional win: 3 points
- Each conference title: 4 points
- Each Super Bowl victory: 5 points
Playoff wins and SB victories are a measure results versus drafting. They did divide into total points and draft points though. Just looking at the draft points, Miami was the # 4 best drafting team over the last 5 years.
Either way, it's clear that over that 5 year period Miami has not abandoned the draft nor drafted poorly.