Exactly. The concept didn't come from wolves alone. We also call it a pecking order based on chickens.

The concept of a dominance hierarchy is widely established:

https://en.wikipedia.org/wiki/Dominance_hierarchy?wprov=sfti...

And the gorillas and chimpanzees studied are not in captivity.

Obviously not every species exhibits this, and the ones that do don't exhibit it all the time. But the article acts like the concept has been discredited when that is not the case at all.