Update: This issue has been fixed. Realtime data and smart insights should be back now. View counts for the affected videos have been restored. Thanks for your reports!https://twitter.com/TeamYouTube/status/1159885087636246534 …
After your this update: my realtime views for a video I posted just today seems to perform really well. In 6 hours, it got views what other videos used to get in 6 days. Now, I'm confused if it is actually fixed or not. Lol. Anyway thanks. :)