Based on the feed back from many different YouTubers now @TeamYouTube!
YouTube is infact broken. Notifications are not working. And people are getting recommended videos that are two months to two years old.
Youtubers are experiencing a 20% to 30% loss in views.
On the YouTube app, if I refresh my notifications, I can’t see my 20 most recent notifications until the page resets. And that happens every time I refresh.