I wasn't really disputing that he applied it to nature, just giving my two cents of why I don't think that application is really appropriate.

It's kinda an apple to oranges comparison. For example, we wouldn't be excited about conducting mutual aid with a fascist organization. We understand that fascist would be more than happy to take part, and eventually use that relationship to destroy us.

Nature in comparison is full of relationships that start as mutually beneficial and then become parasitic after a slight change in ecology. The examples of mutual aid in nature are also likely products of survivorship bias, the organisms that find harmony in mutual beneficial relationships are the product of filling the gaps left behind of other mutually beneficial relationships failling.

To condense my rambling..... We can find examples of mutually beneficial relationships/actions in both nature and human society. Technically all forms of commerce is a form of mutual beneficiary action, but not all mutually beneficial actions are mutual aid. Mutual aid requires intent to organize or intent to diminish the dependency of the current organizational hierarchy.