Why @TeamYouTube why? #PiDay 
pic.twitter.com/Qwlc6Mg0KC
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
This is totally normal and has been the case for many years. It sucks. I think they do this so that no video will ever show as 0:00 (0 seconds long) but that is just my theory, I actually don't know.