I think, that the term "Casual User Protection" may be misunderstood. The casual users should not touch anything that can be configured on Windows 10, because this would end not good for them. The casual user is a target for whom the hardened setup is made.
The CUP is not intended to be configured by casual users, but by semi-advanced users on the computers of casual users. Of course, if the semi-advanced user wants, then he/she may configure his/her own computer too.
The CUP is a simpler version of Hard_Configurator - the H_C is intended for advanced users, because it is rather complex and requires some knowledge to create a sensible custom setup.