No, Boeing did it first with the original 777, way back in 1994. A folding wingtip was designed, the folding mechanism was built and qualification tested, the engineering drawings were all released, it was added to the option catalog, but no customer ever ordered the option.

https://simpleflying.com/boeing-once-offered-the-original-77...

You used to be able to see the qualification test rig mechanism at the Museum of Flight restoration center in Everett, but they scrapped it during the pandemic.

Let's hope, it doesn't fall off...

Cool, but then you'd be forced to fly on a Boeing.

Is that the plane that is already 7 years late due to certification issues?

Neat! https://en.wikipedia.org/wiki/Boeing_777X#Wing

Foldable wings have been on aircraft carriers for a while as well.