As a Pakistani, I thought this was common knowledge. When Google Maps hosted localized maps on country-specific domains, Pakistanis found the Indian version on the .co.in domain and it was a whole thing [1]. Pakistan's even complained to the World Bank for a map of the country that excluded Gilgit-Baltistan and Kashmir during a (literally one) book launch. Some Governments, especially my own, feel slighted at the smallest of things—you don't want to get on their bad side if you're trying to do business with them.

By the way, if you want the official map of Pakistan, it's released by the Survey of Pakistan here[2].

Edit: I want to point out that Pakistan literally bans any website arbitrarily. YouTube was banned for three years in Pakistan[3], and social media websites have been banned many times in the past including (ostensibly) to chill coverage of protests[4]. It isn't too far-fetched to imagine a Pakistan without Google Maps if Google doesn't play nice.

[0]: https://tribune.com.pk/story/1163447/google-maps-shows-azad-...

[1]: https://tribune.com.pk/story/1262447/pakistan-protest-world-...

[2]: http://www.surveyofpakistan.gov.pk/images/downloads/pak3m.pd...

[3]: https://www.reuters.com/article/us-pakistan-youtube/pakistan...

[4]: https://digitalrightsfoundation.pk/press-release-drf-and-net...