Explosive growth is generally speaking not stable. I will defer to the dictionary definition of stable. I'm just using words how they are defined.

From an ecosystem perspective, simple "coral coverage" is not a good enough metric to indicate that the coral reef is healthy. We also need to understand the biodiversity, is one coral taking over because it is better adapted and creating a monoculture? It's not clear. I made a point to not jump to conclusions, simply stating that explosive growth does not indicate a healthy ecosystem.