Tbh when everyone thought that it was from Zero I kind of knew it was BB's tape. My issue with this game isn't the body double theory, I predicted that back in the Metal Gear Community thread OT2, (check out my post history from March/April/June if anybody doesn't believe me) I like the idea of a body double. My issue is the whole retcon of MG1 and now the whole franchise.btw, The Man who sold the World is a solid choice I think.
The song is about someone who suffers an identity crisis or hates himself.
I also like Elegia - New Order
Anyway I agree with you on Bowies lyrics and how they fit Venom.