I'm sorry to hear that you are unimpressed with the recent enhancements we made to the notification page, but I do want to thank you for sharing your feedback.
We recently redesigned this page so that it's easier to see which notifications are new and most recent. And yes, only new notifications are displayed by default. However, if you need to view historic notifications, you can always do so by switching the toggle to "All".
I understand you use these numbers essentially to count the number of listings you would make in a session, and with these recent changes you definitely can still do that. But please note, whenever you click to view the notification page, the notification number will be updated to 0, to reflect there are now 0 new notifications.
Please let me know if you have any other questions or feedback.