This is by far the most absurd theory I have ever read, lol.
No way Akainu learnt anything from Whitebeard, this man was an Admiral, lol.
You can't be a Vice Admiral without being able to use Haki.
An Admiral would surely at least have unlocked pretty much all forms of Haki and sharpened them to the highest level to remotely be considered an Admiral or Candidate.
Either the OP is a troll or.... I'll leave it at that and just use the block button, I can't read such absurdity lol.