But also, hookworm infections are known to suppress allergies and asthma, help inflammatory bowl disease, and improve insulin resistance in people with type 2 diabetes.
If you count cells and genes instead of mass, every human hosts more non-human life than human. Call them parasites and delete them and die.
The argument was only to point out that just because labels are black & white doesn't mean life is black & white, and treating a label as reality is stupid.
No one went so far as to say "everyone should go get hookworm". That would also be a stupid thing to say, and more to the point: a stupid thing to think anyone was saying.