Content Management Systems, should your public Internet Face be done this way?

Definition : Content Management System (CMS): A computer program that allows publishing, editing and modifying content as well as maintenance from a central interface

The other day, I got into a conversation with a fellow Web Designer, who told me that Wordpress and the scripting language PHP, were the future for Web Designers, and that more companies are  deploying more Websites in this manor.

But, lets look at this for a second, does CMS make sense when it comes to the Website that the public , Sure a layout like Wikipedia is good, for publicly curated encyclopaedic content, but for most businesses, at least from their public face, do you really want something that any member of your team can edit from any remote location, without information being validated through the proper channels and departments?

In the world of Business Websites, It's best to leave the interactive, editable content to a platform like Facebook or Google Plus, at best maybe just factor one area of your public site in the CMS system.  I would personally suggest that a company save the CMS setup for a Internally Networked, or Privately accessed Website and go with a more traditional Web Site design for their consumer accessible Site.