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.
Not to mention alot of us are finding channels we sub to being unsubed! I have had to resub to 5 or more channels at least once a month. These are people I watch on the reg.