If I've understood the science stories I've been reading the organisms closer to the bottom of the food chain (plankton, krill, insects, etc) outnumber us in terms of biomass, and we are incredibly dependent on the part they play in our ecosystem. The decline in these species is something to take very seriously.

We can hunt and eat any animal that we "want" and systematically control and produce supply. That's the highest you can get in the food chain.

They didn't say they weren't afraid of loss at the top, but that they were also afraid of loss at the bottom.

Food chain vs. food web aside, not many of us die from being eaten.

You can get meta and demonstrate the food chain is closed in a circle, which it is, but in a conventional sense, yes we are.