1. Putting in a hashtag with a title comment, makes it easier to search and quicker to parse when you're scrolling through your code.
  2. Putting comments next to individual properties muddles up your code. It's easier to see everything you're doing at a glance when your comments are grouped to the block/component.
  3. Your code already explains what you're doing. It's better to tell the reasoning behind why you made the choices you made, especially if they are modifications to existing components.