No, that's what comments are for.

• "Decorating" fails it's basic purpose of notifying answer's author, as edits are not included in the notification systems;
• "Decorating" is very intrusive, and with current wording sounds very much as a threat. Some authors will find it offensive;
• "Decorating" diverges from standard SE practices, where comments are used to notify authors;
• Comments are designed for these cases, comments on authors' posts are included in their notification system.

No, that's what comments are for.

• "Decorating" fails it's basic purpose of notifying answer's author, as edits are not included in the notification systems;
• "Decorating" is very intrusive, and with current wording last sentence sounds as a threat. Some authors will find it offensive;
• "Decorating" diverges from standard SE practices, where comments are used to notify authors;
• Comments are designed for these cases, comments on authors' posts are included in their notification system.