"Invasive" is a made up human concept. The question is whether there are species that now rely on these as a food source. The entire natural world is a hodge-podge of "invasive" species coming from some nearby land, disrupting the ecosystem, then the ecosystem evolving around it – typically a gradual process over thousands of years.
If it took a couple hundred years for this species to proliferate, it's absolutely plausible that eradicating it in a few years will have surprising second- and third-order effects.
"Invasive" is a made up human concept. The question is whether there are species that now rely on these as a food source. The entire natural world is a hodge-podge of "invasive" species coming from some nearby land, disrupting the ecosystem, then the ecosystem evolving around it – typically a gradual process over thousands of years.
If it took a couple hundred years for this species to proliferate, it's absolutely plausible that eradicating it in a few years will have surprising second- and third-order effects.