[dukeman]

The fundamental purpose of this is to undermine the belief in human exceptionalism

Absolutely! Philosophers like Singer want to ignore the qualities that make humans unique and different from all other animals. That fits their atheist worldview.

[Jaysun]

Absolutely! Philosophers like Singer want to ignore the qualities that make humans unique and different from all other animals. That fits their atheist worldview.

One of the unique qualities that humans have is the ability to restrain ourselves, to have empathy for animals. If we're all reduced to apes we'll think nothing of killing apes, just as the apes would do us.