Probably because your comment is incorrect. Django-CMS is almost exclusively structured content, and since it's essentially an extension of Django, you can use standard django models within the CMS.
If you want more of a page based CMS, check out wagtail. Also pretty awesome, although in very different ways.
Not sure who down-voted you. In your defense you did qualify your statement with "...as demonstrated in the video...". I suspect the DV'er thought you made a lot of bold assumptions though, based on that one, single video?
If you want more of a page based CMS, check out wagtail. Also pretty awesome, although in very different ways.