I'm grateful to Brian Proffitt for clarifying some of these confusions about Android licensing. In particular, I'm glad I'm not the only one who has cleared up the confusions that Edward J. Naughton keeps spreading regarding the GPL.
I noted that Naughton even commented on Proffitt's article; the comment spreads even more confusion about the GPL. In particular, Naughton claims that most BusyBox GPL violations are on unmodified versions of BusyBox. That's just absolutely false, if for no other reason that a binary is a modified version of the source code in the first place, and nearly all BusyBox GPL violations involve a binary-only version distributed without any source (nor an offer therefor).