Agreed with the "what does this achieve". In Corporate environments you would use SCCM or simply the Windows ADK plus WDS.

Installing a custom Firewall and Antivirus ist straight counteproductive, as ist disabling security features... obvisouly.

Downloading and installing group policies however is often required and a typical enterprise scenario.

Whenever I hear people praise these kind of things I know they don't really have any professional knowledge. It's fine to configure your own system, but suggesting these things SHOULD be done pisses me off to no end.