For those interested, this information (~200 units, 2 per person) was shared on Reddit and wasn't on the original article. As for the time-frame, if they manage one transaction (giving one person 2 units) per five minutes on average, they roughly fit into eight hours.

[1] https://www.reddit.com/r/homelab/comments/bz2yj6/backblaze_g...

[2] https://www.reddit.com/r/homelab/comments/bz2yj6/backblaze_g...