That was not really an "idea", but the result of collective actions. This is to previous extinctions [1] as premeditated murder is to negligent homicide.
> So it's better to compare it to the idea of eliminating all the jews during WWII (however it also isn't perfect comparison, because jews aren't really a different species).
I've also never been bitten by anyone of Jewish descent, and while they're as susceptible to infection disease as any other human, they don't carry a disease that kills hundreds of thousands of people per year. So maybe this is kind of a silly comparison altogether.
That is probably the weakest Godwin-ing of a thread I've ever seen. Eliminating an unthinking species for good reasons is no no way morally equivalent to massacring an ethnicity for no particular reason.
I wish I'd turned up before the grandparent comment got downvoted to deletion, in order to point out that what we're discussing here could just as easily, and rather more accurately, be considered the result of "a natural competition, when one species eventually loses and dies out".