Chernobyl was triggered by humans but the ultimate problem was it's design. And it shows - Fukushima was triggered by tsunami, but ultimate problem was again the design. But since the design was much better, the impact is much milder vs Chernobyl
And honestly it wasn't, not really. It was hit with a record-breaking earthquake and a record-breaking tsunami... and more lives were lost due to evacuation than to the plant shutdown.
Yes, radiation killed zero. Evacuation - thousands