I think there is a balance between how much your read and write.
I 100% agree that reading improves your writing in all of the ways you mentioned in your piece - formatting, language, grammar use etc.
I do, however, think you should write every day to create good writing habits and keep them going. I don't think you have to publish something every day, that's not always possible, but definitely write. Work on a current piece or journal for example. I feel writing is like a muscle and you must keep it active to keep it strong.
Thanks for sharing your thoughts, I enjoyed the read 👍.