The planning/demo page contains a factual inaccuracy.
On the planning/demo page it is stated that:
"CiviCRM hosts several demo sites - there is at least one for each of the supported Content Management Systems (CMS) - Drupal, Joomla, and WordPress. The demo sites present a working copy of the latest stable version of CiviCRM with sample data. You can use them to play around with CiviCRM, but be aware that they are publicly viewable so you shouldn't enter personal data."
So the following issues arise:
- There is no demo for Backdrop which is one of the supported CMS'
- The demo sites aren't always running on the latest stable - we should be clearer that these are "best effort" sandboxes and not all of these are easy to automate.