Can one do some interesting things with Hair Ball? Sure, just like Blue Man Group can do some interesting things with PVC pipe. You you don't see BMG actually using that pipe for the purposes for which it was originally designed, like plumbing and such. Similarly, one can do some interesting things sometimes with Hair Ball, just they are rarely the purposes for which Hair Ball was designed and is advertised.
In the right hands, Hair Ball could have a place in the tool kit. But those hands are NOT the audience to which Hair Ball is marketed; i.e. they should never be the hands of a newb who has not already developed a more-than-basic understanding and skill set of how this racket actually works. Let's put it this way, if you want to use it as "visual mastering software", then you should not go near it.