I think he's saying it in a "what-if" way. We could even think of it as a parallel species, maybe humanoid, that also evolved intelligence along side humans.
If so, let's hypothesize this: a world where we aren't the only intelligent specie (furries!). In that light, it can be easily seen how different their culture, should they develop one, be radically different from our's should they be herbivores. We're driven to hunt, kill, and consume in order to live. This is necessary to survive, and if we apply the theory of evolution to this, we can even say that those who weren't agressive enough didn't survive. So humans would evolve to be more and more efficient at hunting. Eventually we would start using tools and other things like control of fire to increase our ability to hunt. This is pretty much how technology evolved over time, and it is evident in our continued reliance on fire for everything from engines to heating, and tools for everything else, powered or otherwise.
But the other theoretical specie, should they be herbivores, may not possess the drive to use tools for hunting, or the need to improve upon their tools. They may eventually develop things like drums and paintings as a result of a maturing culture, but they may not be as rapid in development or as wide spread in usage as humans would with our spears and torches. Depending on their growth as a society, they may eventually create their own cities and countries, but differences in need might hinder or prevent development in things like weapons and electronics. Not only that, their basic thought processes might fundamentally differ from humans, since they may live in packs, like elephants would, and may create a society free of things like widespread war or murder.
However, if they're carnivores, then humans may look delicious to them, or maybe even the prime prey, since they may enjoy hunting, like some human society have, and may find us humans to be difficult and powerful preys. We may end up on the defensive, as the more powerful and equally intelligent specie hunt us down for status and food. They may create a society of warring states and have massive armies, where conscription is not just mandatory, but perhaps as normal to them as going to school is for us.
Of course, this is just an example (perhaps not a good one) of how much of a difference could occur just from a difference in the primary food source. Herbivores are primary consumers, so things like fruits and grass is good enough, and they won't need to develop weapons to survive, and if intelligent, may create a society based on relationships and arts, whereas carnivores, being usually apex consumers, would hunt down everything in sight, and create better weapons to hunt down more, and may create a society based on warfare and killing preys.
We humans, being omnivores, could perhaps act as an example of a midway between these two different species. Possibily, if we divide up our culture into two halves, we would get the results for the potential societies of intelligent carnivores and herbivores.