I am not someone from ops, but after looking at last month of edits I couldn't find any page that discusses this change. Furthermore it seems you are the only really active user on that wiki. Changes like this need to reflect consensus, and one person is not consensus.

@Wiki13 I have asked from @MuhammadShuaib (one of the bureaucrat of urwiki)

I uloaded this patch
https://gerrit.wikimedia.org/r/#/c/403120/

Yea, but generally you need consenses from the local wikis that are going to affected by such a change. There are no local discussions as far I see. Don't know what the exact procedure would be if it were to be requested from like a Wikipedia instead of a Wikibooks for example.

Maybe someone of ops can shed a light onto this matter?

In T184499#3885705, @Wiki13 wrote:

I am not someone from ops

@Wiki13:FYI, this task and this topic does not require "someone from ops" (at least not yet at this stage).

@Aklapper It was more of a question on how stuff like this is usually handled. I thought that team could answer that question, but maybe there is someone more appropriate that could answer it.

@Wiki13: Ops have nothing to do with namespace alias changes. Namespace definitions are higher in the stack. :)

In T184499#3885727, @Wiki13 wrote:

Don't know what the exact procedure would be if it were to be requested from like a Wikipedia instead of a Wikibooks for example.

Wikipedia vs Wikibooks is irrelevant - no differences. See https://meta.wikimedia.org/wiki/Requesting_wiki_configuration_changes for the process.

I don't think my message was understand quite correct, not that it makes a difference as the linked page explains it well. This request from a bureaucrat on a Wikipedia. There was no local discussion on that wiki, hence no consensus. I thought in that case it would be handled differently, but that's not the case (looking at the page). That's on me for not knowing (I haven't been hanging out here until recently, just to help where-ever I can).