This is hilarious, of course, but it also points to some really interesting languages. Turns out that fungeoid is an actual category of fascinating experimental / toy / joke languages. Obviously Piet is not particularly useful in the real world, but thinking about languages like this has got to be good for a programmer's mind.
For example, try thinking about what kinds of things this language would be useful for. Or if a similar visualization for an existing language would be useful. Unlock your mind and let it roam...
In case you didn't click the link in the article [1], here's part of what Wikipedia has to say:
"A funge is an esoteric programming language which models its programs as metric spaces with coordinate systems (often, but not necessarily, Cartesian) and which execute instructions located at points in their program space by moving an instruction pointer (a position vector which indicates the currently executing instruction) through that space."