Two billion people can read it to some degree because of Islam. A minority of them actually use the script to write things daily.

And there are plenty of people other than this guy making contributions to it, you’ve only just read a singular post by a single person outlining his most common gripes with companies that do not consult native speakers for their translations. It’s not an exhaustive list of people working in the sphere. Imagine if you read a blog post by Linus Torvalds, and thought: ‘wow, it’s crazy that no one else is making contributions to this cool open source kernel?’ - that’s exactly what you’ve done in your comment.