It will definitely help, but also some people, especially in marketing/sales, were writing like that before LLMs. So you should not only write the thing yourself, but also learn some good writing style.
This. Back in the day, the Cluetrain Manifesto said that corporate writing sounds "literally inhuman". Human beings don't talk the way corporations do. And people want human connection, not the impersonal touch of a corporation. So learn to write like a human being, not like a corporate drone.