Really depends on your perspective. Like any Caulerpa it can be invasive, an aggressive grower, and can root into LR and be a pain to eradicate. It can also sporulate (go sexual) if it runs out of nutrients to fuel growth. I think if its growing well, and you like it, you should keep up on pruning it at each water change to diminish the potential for a sexual event. A foxface or tang might find it delectable if you wish to get it out entirely.
>Sarah