I do not understand the opposition to bringing salt marshland species (at the bottom of the article) The change will happen anyway - all we can do is speed up

I do not understand the opposition to bringing salt marshland species (at the bottom of the article) The change will happen anyway - all we can do is speed up the environment adaptation by bringing in plants that will eventually find their way there anyway: > A more radical approach would be to introduce marsh plants that are salt-tolerant in threatened zones. This strategy is controversial because it goes against the desire to try to preserve ecosystems exactly as they are. > But if forests are dying anyway, having a salt marsh is a far better outcome than allowing a wetland to be reduced to open water. While open water isn’t inherently bad, it does not provide the many ecological benefits that a salt marsh affords. Proactive management may prolong the lifespan of coastal wetlands, enabling them to continue storing carbon, providing habitat, enhancing water quality and protecting productive farm and forest land in coastal regions.