From Guilded, a Seattle web design & engineering firm, comes a nugget around why good writing is so important:
Bad writing is a meeting factory. Being able to articulate a thought in writing means your team gets to take advantage of asynchronous communication. Whereas meetings are synchronous— requiring all parties to be present and engaged for the duration of the communication event—written communication is asynchronous, meaning the recipient can address your request or idea on their own time.
Source: Software is 10% Code