Margaret Wille casts her lot with " medical anthropologist"(med school dropout)/coqui frog defender/ antibra crusader/crank Syd Singer and his lawsuit against various entities to halt the poisoning of mangroves anywhere on the island.
No doubt relying on extensive training in environmental engineering, Margaret notes that mangrove removal was a negative factor when New Orleans was hit by Hurricane Katrina. Mangroves play an important part in anchoring the silt from the Mississippi River in the Louisiana delta, where they are native. She doesn't consider that such anchoring might be necessary for an area comprised of silt and mud, but useless or worse in Puna's recent lava land (which is, I have noted, fairly solid), or why a thicket of mangroves preventing access to the shoreline is desirable.
Huge areas of this island are overgrown with one or another invasive plants. Some people like the invasive plants. Most newcomers, though, understand the need to protect, to the extent possible, Hawaii's native environment. They understand that if they want to live around mangroves, there are planes to Louisiana and Florida every day. They understand that when they champion the destruction of Hawaii's native environments, they join an only too-familiar tradition. Busybodies and Cranks, on the other hand, don't care, and are themselves a kind of invasive species.