I will make a case for both, after you define them in a way that doesn't also exclude many humans (including the neurodivergent or those with amnesia) or turn into self-referential nonsense like "conscious == human, therefore machine !== conscious."

In the meantime, we have a simple choice between two risks: Would you rather accidentally show kindness and empathy to a thing that may or may not have "deserved" it, or risk atrocities that will leave future generations as disgusted by you as we are of the slavers of old.

I will choose to be decent. It's free, and even if the cost were high the cost of evil is higher.