Eh? Did you read the post?
"I wrote a simple YouTube client app using the latest YouTube APIs" - The content was not pirated, he created an app with one purpose; to allow you to play videos from one particular YouTube channel.
"I wrote a simple YouTube client app using the latest YouTube APIs" - The content was not pirated, he created an app with one purpose; to allow you to play videos from one particular YouTube channel.
The videos were uploaded to YouTube and he used the YouTube API to display those videos as part of his app.