My impression from other tasks along these lines is that shutting off anon page creation is not generally done even when there is consensus for this as it violates fundamental principles of Wikimedia, c.f Limits to configuration changes, T47066: Disable anonymous page creation at tr.wikipedia and T44894: Please restrict anonymous users from creating new pages at sw.wikipedia.
Also, does the request cover both talk and non-talk pages or just non-talk pages?
There is JS trick that we can pull at least to force IPs to use page preview before creating a page but it seems azb community want to not restrict IP Article creation, I think talk and non-talk page are not part of this request
What problem do you exactly have with new IP page creations?
For example, it could be a spambots, human vandalism or low quality content issue.
From the list of these problems, we could see if less restrictive solutions could be tested before to take a drastic measure like this.
Though I am native speaker of the language but I am not part of the community, I am just proxy here, since they were not familiar with Phabicator, I will try to ask them, what you asked here