It's clearly stated that the solution is meant to be like guitar tabs for piano. It's a limited, instrument-centered approach and not intended as a complete or universal solution.
But then again, probably wouldn't have gotten to the front page without the word "redesign"
[0] I say "some sense," because tabs are still fairly limiting, particularly in depicting complex rhythms. Traditional sheet music is still very common (and, I contend, indispensable) for advanced guitar study.
True, and in the Piano you have to care about which finger to play it with (which is a similar problem)