In this very specific case, the guitar pro tab is really bad.
But someone like me could use it, and his ears, to figure out how to really play it with ease.
Also, the ones with "bad ears" are not the ones writing the good tabs: they are the ones using them to improve.
In short, writing guitar pro tabs is something people do for other people and for themselves: a really big part of them are really good and accurate, and in this aspect, the only difference between it and writing it flat out on paper is the ability to help people who have trouble with the song, or want to learn them fast.
Everybody wins, no harm done.