For the last time, fal... no one wants to hear about your mother.

NIS supports shadow, so there's no need to distribute an unshadowed passwd map like your example.

Anyway a lot of unix systems that have been around for a long time use NIS still. This is probably why it's still on the RedHat certs (people wanting to put a redhat workstation on their existing network, or to upgrade their existing NIS server to something newer).

Besides, it can be a pain to get rid of using NIS, especially on older networks. So it will probably be around, and will need to be supported, for many many years.