Yes, developers need to improve writing skills. A good book on the matter is Chris Ward's Technical Writing for Software Developers, which I reviewed here: https://passo.uno/review-technical-writing-software-develope...
They also need to hire technical writers. Did the author know they exist?
https://docsfordevelopers.com/
Although truthfully I'm not picky. If you're a developer and make any conscious attempt to hone your writing skills, I will love you forever and prioritize your Jira tickets accordingly.
More on topic, I'm under the impression that this is a budding idea of the author's, at least as budding as a thought willing to be made public can be without being totally picked a part by the crowd here.
So yeah, he needs to read that book and post a review of it next. Keep the butter churning.