http://mid.gmane.org/CAFoGK8FHVzbM_gBCi3LxeVGeHwz2coXxyap4gQpz4n-GtEQr5g@mail.gmail.com

However, if all that OLPC remains is a vendor of cheap, proprietary Android tablets wrapped in green silicone, then what motivation remains to continue to plug for it?

A very good question.  Fortunately, it seems that the folks at Sugar Labs are continuing to fight the good fight.