I think you are being a little narrow-minded in basically saying that your own 'deep satisfaction' in 'deep learning' is the single-goal of maths.
To me, there are many sides of maths, and different people know, utilise and enjoy these in different ways. If this tool provides a new 'in' I'm all for it - though of course its not going to teach everything, and its not going to be right for everyone (nothing is - even the best maths lessons).
Also - its aimed at non-maths time (ie. replacing 'angry birds') rather than competing for with other learning time (I wouldn't be so happy if they for instance started making things like this mandatory in school). So really I don't see where the loss is....
To me, there are many sides of maths, and different people know, utilise and enjoy these in different ways. If this tool provides a new 'in' I'm all for it - though of course its not going to teach everything, and its not going to be right for everyone (nothing is - even the best maths lessons).
Also - its aimed at non-maths time (ie. replacing 'angry birds') rather than competing for with other learning time (I wouldn't be so happy if they for instance started making things like this mandatory in school). So really I don't see where the loss is....