IMO the issue is not that OP shared a video, it’s that they shared a video from YouTube that’s the issue.

The googleTV dongle doesn’t have any ports apart from usb-C for power and the attached HDMI cable. It’s what was once called a chromecast.

Yeah the documentation (if it even exists) of most projects is usually clearly written by people intimately familiar with the project and then never reviewed to make sure it makes sense for people unfamiliar with it. But writing good detailed documentation is also really hard, especially for a specialist because many nontrivial things are trivial to them and they believe what they’re writing is thorough and well explained even though it actually isn’t.