The parent's claim was "Biodiversity does not directly benefit everyone, while global trade does." If you or the parent want to make a more concrete and specific claim than this, I will happily reply in kind.

> No, extinction of species due to infections is not a planetary catastrophe. It's natural and perennial.

Indeed, but our human economy is built on top of relatively stable and predictable natural circumstances. If there is mass ecosystem collapse, the economy is coming down with it. If you don't believe this check out the graveyard of civlizations that overfarmed, overfished, clearcut forests, or otherwise weren't good stewards of their local ecology.