Yeah, very lucky beta (Rev. A) testers.
Straw man argument used by the jealous. That held credence in the days when successive hardware updates were truly built on the previous model, but with today's tech every refresh, not just completely new model, is made with many different parts than the previous. There are so many variables the guts are never that similar. It's just as likely for a Rev B,C,D, etc. to be buggy as a Rev A. We are all always beta testers. No consumer product is ever pushed out bulletproof.
Remember the PowerBook G4 white spot issue? That didn't happen with the first PB G4, but rather, one of the last.