If you had watched the video instead you would know that this isn’t really the point of it.
You’ve got the wrong mindset going into it. Would you really go to a standup comedy and then complain you learned nothing useful? These videos are for entertainment foremost, lecturing second, concise factual information not at all.
That’s one way to look at it. Another way is to see it as entertainment trying to get you to watch, not a lecture trying to be concise.
Also, the question in the title has an answer which I think is far more interesting than the one given in the comment a few levels above this, and that is the answer the video gives. Sometimes the story told on the way to giving an answer can be more interesting than the actual answer, and this video, as a bonus, goes through the basics of DNS in a way that is digestible for a casual viewer. In my opinion, these are all more interesting than a guy writing “it’s .de”, and are all valid reasons for the video to be titles as it is.
That’s one way to look at it. Another way is to see it as entertainment trying to get you to watch, not a lecture trying to be concise.
Hmmm what’s worse: giving a video a shitty and misleading title because you’re a dumbass…or giving a video a shitty and misleading title very intentionally because you’ve decided that the content isn’t good enough to draw viewers on it’s own and have therefore decided to deceive people into clicking and watching based on said title?