Earlier quoted context omitted.
Yes, they also do this for ID's, and for voter ID's. It's specifically created to prevent people whom don't have only 1 permanent address,with paper billing, being able to live their daily lives. I had to go to a local county courthouse 4 times to get a "realid" and to renew a driver's license. I had to call all sorts of people to get printed statements sent to me. It's incredibly ridiculous, I would call it complete…
The point is to authenticate residency, and while it’s not a great system, there also isn’t any better alternatives.
If you wanted to truly authenticate residency or at the very least prove that someone has access to the mailbox, sending them a one-time auth code per mail would be a better idea rather than relying on third-party services where people may use paperless billing for convenience.