A long time ago, the decision was made to base the docs and all examples on Ubuntu LTS, since the installer docs were already based on it, to give the docs more consistency and because it is hard to maintain X different OSs.
With a small change on the docs, to follow exactly this scenario a whole, sometimes slightly heated 'comment exchange' started: https://github.com/plone/documentation/pull/459#issuecomment-161569864 .
So lets take that out of there and find a hopefully proper solution, which fits the whole documentation, it make no sense to change it only in some tiny parts because this is will confuse user.
If you change that we need to find a solution through the whole docs to have it consistent.
Things to take care of for example are [there are more]:
- Installation ?
- Dependencies ?
- examples, how you want to solve that like install paths or other stuff ?
- tools, we mention tools which are easy to use and to install in Ubuntu and OSX but not in CentOS, how to solve that ?
If you choose one OS for the examples, why that one and not the other one ? Ubuntu vs CentOS ?
I am not even mention other OSs here
This has impact on and through the whole docs !