While I understand it technically I feel like the video is incredibly misleading. It's demonstrating time-to-share a link which (at some point) will contain a file. It's not demonstrating time-to-upload a file like the video suggests by comparing directly against dropbox.
Incredibly misleading? Obviously it doesn't give you 8Gbit internet, it just saves your precious time. You don't have to spend five minutes on a task. It's not like Bruce was going to download that file as soon as he got the message, and that's assuming it sent right away, which it could avoid by delaying the email by those same 5 minutes.