I like the idea but it will be hard to build a moat -- if that's something you care about. How about making it more general? "touch grass", "feel sand between your fingers", "hug a tree" ...
It's startup culture speak to describe something that is unique and impossible/hard to copy for competitors.
I think (hope) that 20wenty was being cheeky and playing along the all-too-common vibe that every project presented on HN needs to become financially successful or else it's a waste of time.