Did you click on the Play arrow?
If you go to the bottom of that web page, there is another link in small letters(ingeniously titled “link”) that is supposed to take you to the YouTube web page where the video was originally posted. When you click on it, you get the message I referred to in my second post.
If the original poster has had the video pulled on YouTube, it may be just a matter of time before he/she finds out it is posted elsewhere and has it taken down there as well.
Hence my encouragement to enjoy it while you can.