Yes. It's basically turned every device, especially mobile devices with the app running in the background, into botnet clients which are continually hitting their DNS servers.

I don't know what facebook's DNS cache expiration interval was, but assume it's 1 day. Now multiply the load on the DNS that those facebook users put by whatever polling interval the apps use.

And then remember what percentage of internet traffic (requests, not bandwidth) facebook, whatsapp, and instagram make up.

It's kindof beautiful.