Trying to enumerate printers doesn't imply that the application will use them, it could easily be part of the initialization of some framework, shared library,

Trying to enumerate printers doesn't imply that the application will use them, it could easily be part of the initialization of some framework, shared library, language runtime, or whatever. Unless there is some actual user interaction, there is no way for the OS to know what the user is trying to do. It is best to err on the side of not making assumptions.