> Writing is only a way to convey information, there a many other ways to do it, and there surely will be other ways.
It's the best way of conveying information, especially in a business setting. It's accessible, portable, can be as detailed and nuanced as needed, you can copy it, you can reference it later, you don't need a proprietary solution to use it. In fact, you don't even need a computer for it. All other methods of conveying information in a business setting that I can think of (face-to-face communication, video and audio conferences, Power Point presentations, chat apps, symbols, source code) don't meet all of the above criteria.
> The current system favors people who know how to write in English
Now this is discriminating and narrow-minded. Nothing stops a German company from writing well in German - if that's their main language.
I'm curious which system you think is more fair and objective.
> A language that may work for you may not work for others
This could be generalized as "a solution that may work for you may not work for others". And that's ok. An organization can have its own culture. A part of this culture might be writing well, but also agile, open floor plan, working remotely, or afternoon mimosas. It's ok to disagree with the culture of a particular company and not be a good fit. You are free to prefer companies that don't emphasize good writing skills - which I suspect are the majority.