That's a problem because it's incompatible with a large number of licenses from other libraries and projects.
While I'm sure fans might appreciate the gesture, it's a poor choice of license and will keep it from being widely available on other platforms.
In particular, condition 17, a) of the license seems difficult at best for anyone to actually legally fulfil:
(a) Licensor represents and declares that it is a not-for-profit organization that derives no revenue whatsoever from the distribution of the Original Work or Derivative Works thereof, or from support or services relating thereto.
Yes, because every open source developer just happens to be part of a Non-Profit organisation. *rolls eyes*