Free and Open Source Software

If the people selling are passing someone else’s work as their own, that’s stealing.

Which they are, unless they somehow only charge you for the portion of the code they wrote, in which case it wouldn't run afoul of this license anyways, since you're not charging for Grayjay. :)

Also, looking at OSD.org, nothing requires allowing commercial redistribution of the original code outside of as a component of an aggregate package, in rule 1.

Rule 3 says that derived works must be allowed (and says nothing about being charged money for) using the same license as with the original distribution, which would in this case mean a license that restricts commercial redistribution.

Also, the author of this has clearly not read many of the OSI licenses, because MANY of them revoke the license if patent litigation is initiated against the distributor:

7.2 If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Covered Source or a Product constitutes direct or contributory patent infringement, or You seek any declaration that a patent licensed to You under this Licence is invalid or unenforceable then any rights granted to You under this Licence shall terminate as of the date such process is initiated.