Filter by "Time Aloft" [1]. I did and don't see the specific plane in the YT video (they certainly don't have every airplane in their database).

Search for Walkalong Glider [2] to find what you want.

[1] https://www.foldnfly.com/#/0-1-0-0-1-1-1-1-2

[2] https://www.youtube.com/results?search_query=walkalong+glide...

"Walkalong Glider", uow, I didn't even know the term to look for, thanks!

Honestly it looks like it is flying solely on the thermals from his breath.

Still pretty cool though :-)