Both local and global biodiversity suffers. Invasive species are usually existing perfectly well in their native lands. Introducing them to new habitats does them no good, and risks the integrity of native ecosystems. We are not concerned with these slow changes. The invasions we are worried about are the ones that humans have caused, and which are resulting in the suffering in our native biodiversity.
Restoration is usually a necessary feature of invasive species management.
We feel it is important to keep the focus on managing the land for biodiversity, and not just against weeds.