There are so many benefits around having a personal blog that I'm surprised about reading all these negative comments. I started blogging about tech and security when I was 13/14 years old in my native language. Then, when I felt more mature, I switched to a new blog where English was the main language. I started improving my language skills, getting some donation from kind strangers for my blog posts and using it as…
I think there’s a lot of people out there who don’t want to believe written communication skills like these are as important as raw technical skill.
The logic was, if you cannot communicate, you cannot explain why your job, or what you're doing is important. If it has value. If you have value. You cannot hope to explain requirements to others. Or explain the logic or reasons, the "why" of a technical path.
You're likely correct that a lot of people think this unimportant. To them I'd say, they're severely limiting their career, if they don't think communicating is important.