What if you have a topic 8 pages long and you are reading the page 5, then someone edits a comment in the page 2, you click the notification, then the next time you enter the topic, you will be redirected to page 2 instead of 5. It'd break the bookmarks.
There is an alert for a new reply. What about edited comments? It's part of following something.
What if you have a topic 8 pages long and you are reading the page 5, then someone edits a comment in the page 2, you click the notification, then the next time you enter the topic, you will be redirected to page 2 instead of 5. It'd break the bookmarks.