I feel like most of the most of the people here didn’t read the article or watch the video. If you’re asking “why would anyone need this”, the article touches on it:

One of Lenovo’s big ideas is that the form factor could be useful for digital artists, helping them to see the world behind the laptop’s screen while sketching it on the lower half of the laptop where the keyboard is[…]

Also, it’s a prototype, yet people are responding as if this is a product that Lenovo is launching. Even if transparent screens do become a popular but useless fad, that wouldn’t nullify the value of this prototype. Trying shit is fun, especially if it’s something we’ve been imagining in sci-fi for years!

TwoMinutePapers is a well-established YouTube channel that does a great job of explaining new scientific techniques/advancements (usually in the areas of computer science and graphics). Do you actually have anything to say about the content of the video?

No better way to test the permissions system in your app than hosting a public demo.

People aren’t going to do it, the platforms that 95% of people use (Facebook, Tik Tok, YouTube, Instagram) will have to add the functionality to their video players/posts. That’s the only way anything like this could be implemented by the 2024 US election.