Cid Silverwing said:
I didn't get gifted this game by another friend only to be told I was playing as a pretender to Big Boss and not Big Boss himself (MGS2 comes to mind), but then again I despise this characterization of the actual Big Boss now. He's been turned into a straight-up villain, no different from any of the other villains of MGS before him.
But, Big Boss pretty much was a straight up villain. In the original MSX games he has virtually no redeeming qualities, there's children running around Zanzibar Land for heaven's sake! The point of 3, Peace Walker, and now V, was to characterise Big Boss, and show HOW he became who he was (something I don't think they succeeded in, but that's another topic). The twist at the end of Phantom Pain was also to explain how Big Boss survived the destruction of Outer Heaven in Metal Gear. Whether or not you like the plot/twist is up to you, but in the context of the series, it makes complete sense.