I don't understand why they don't release it as a simple script, or better a config from a tool like puppet achieving idempotency. That opinion can also apply

I don't understand why they don't release it as a simple script, or better a config from a tool like puppet achieving idempotency. That opinion can also apply to many distro derivatives using the same packages as the original. Releasing images for what are just minor changes of configuration seems like a waste of storage, bandwith and energy in general.