Every time you buy something from Amazon, drink tap water, or live in a dwelling that you didn't build yourself, you are being a social creature. Few animals are capable of interacting in these highly complicated and choreographed ways.
I'd say that's stretching the definition of social beyond the breaking point. Technically those interactions involve other humans, but none that you engage with directly. It's direct human interaction that is the key to whether something is 'social' or not IMO.
Consider the context. The subject under discussion is those who want to be alone. It's quite possible to be alone whilst still enjoying the fruits of human collaboration.