I didn’t build this website but inherited it and maintained it for my tenure at WebPT.com. Once WebPT acquired Clincient, this site became part of the WebPT ecosystem. It is compelling and was built by a very competent development team. Plenty of customizations have been added that make working with the site a breeze.
Customizations like making the Admin dashboard more usable for non-techy users were a great addition. Often, WordPress administrators create new users but give them full access to the entire site (some admins, not me 😎). Most users don’t need full access but rather access to areas where they will work. For instance, Content Writers don’t need access to the caching system or plugins. They only need to be able to write, edit content, update SEO data, etc. This framework solved those questions well.