Tldr: instead of disposing of toxic industrial waste products, Dow Chemical thought “our toxic waste kills plants, if we convince farmers and suburbanites they need to kill plants, they’ll dump our toxic waste on their land and pay us for it!” The rest is the history of ecocide.
Invasive plants expand and kill the native species. Bradford Pears like those planted by my prior home owner prevented anything else from growing under it and 2 years after removal, is still trying to sprout.
Where I live Mimosa kills everthing where it grows, so does Eucalyptus. But watching (and unsuccessfully fighting it) during two decades I find that it ultimately can’t outgrow the native species, it finds a more humble place in the landscape with time. Yes we shouldn’t stupidly introduce new stuff left and right, but the idea that invasives could be removed entirely feels entirely impossible (how? and where to draw the line?), and also frighteningly fascist, to me. Managing a landscape by building diverse ecosystems where the ‘invasives’ have place and function seems to be a more fruitful (!) thing to do imo.