Well you said it doesn't matter because we don't know the numbers, yet the numbers we do know about don't match any scenario that doesn't involve large scale tax """optimisation"""
My dude... they literally are in court right now over these things... it's a known thing for years now, apple just got fined by the EU for the same shenanigans. It really isn't a conspiracy or a secret, everybody knows it, they just use the very convoluted EU laws and systems to get away with it but the door is slowly closing