Same as Google. Many internal tools have painful interfaces and poor or documentation because the hiring bar was high and it was acceptable to assume that the user's skill level is high enough to figure it out. That attitude becomes a bigger problem when trying to sell tools to the public (e.g. Google Cloud Platform).
As an outsider, I was always under the impression that Google had a tradition of engineering excellence (robust tools, clean and while tested code following strict guidelines), while Meta has more of a Hacker culture (move fast and break things).
