True in many cases but not all, and the people managing these populations are almost never directly responsible for the problem. For example the species I now help manage in my country were introduced generations before my birth. Same for the overwhelming majority of the land clearing, it was done before even my parents existed.

I can’t change history, but I can take some responsibility for mitigating the damage of those who came before me.

This sounds exactly like the lies anti-drug proponents tell to try scare people off drugs. Did you know there was a boy who died after injecting just one marijuana?

They are carrion eaters, so their mouths are full of nastier bacteria than a dog

As the former owner of an E36 and then an E90 I can tell you that the more modern ones still piss oil just as badly. And the consequences can be much worse (read: expensive) to boot.