Yes. You need to be an MVP/Rising Star or have some other title within the company. I found an article once that stated you should send an email to request writing blogs/articles, but I tried 3 times without even getting an answer, so at this moment, I don't know how you can be granted permission to do this.
You could just write a question, starting with 'BLOG: ' or 'ARTICLE: ' so you can share your knowledge. It's very strange it's so hard to get the permission when the Community is all about helping and sharing.
