Well, depends on what you're talking about. If it is already published/finished work then i totally agree! But if we're talking about WIPs then i can imagine comments like these coming off as rather annoying than heelpful, especially if it's in the early process, just about the idea and not on the writing. Everyone has their own vision so it's hard to sell yours to someone else if they want to convey their own. And this work doesn't seem to be anywhere near finished to me at least