About the second point. In Word, you can easily get feedback for specific paragraphs by just writing around or underneath those paragraphs, or for the whole by just writing in another document & keeping that document open in another window or in the same window. But you can't easily get feedback for specific chapters, & you can't do any of these things while easily keeping chapter-specific notes always in view. This among other reasons is why this app is maybe more powerful than Microsoft Word, Google Docs, Obsidian, etc. It balances notetaking & reflection & writing. Microsoft Word & Google Docs focus too much on writing, & have very little capability in the other 2. Obsidian focuses too much on notetaking, & has very little capability in the other 2. None of them integrate all 3.
About reflection. With Word, the moment you make changes to the document, all the stuff written to the side goes out of sync. So it's best just to write in sequence. So Word has no advantage there.