Cluster munitions has a clear definition. It acquired a clear definition when the treaty was drafted. Cluster munitions release a … cluster (group) of smaller munitions that themselves explode on impact.

Fragmentation munitions break apart and the fragments cause death and destruction.

If someone claims that she’s seen cluster munitions that were outlawed, she’s claiming to have seen cluster munitions that were outlawed, not fragmentation munitions. We may not like either, I certainly don’t, but one type is illegal and another type is not. The picture she’s used it’s actually not even munitions, it’s fuzes, ie the thing that makes munitions detonate.