Comment 52 for bug 1569237

Hello,

It's been nearly a year since this issue has been filed.

There are some minimum requirements for Vagrant to function (https://www.vagrantup.com/docs/boxes/base.html).
If you are to provide an official ubuntu box, just meet those requirements.
If you are to meet some others requirements (Ubuntu users expect to share the same experience, aka having a ubuntu user) then do it if you want, but at least meet the requirements of the technology you provide an official image.

Excerpt from https://www.vagrantup.com/docs/boxes/base.html: Perhaps Chef, Puppet, etc. but not strictly required.
If you do not want to ship them, then don't, but at least state it.

In fact, state anything on that one-year-old ticket