Remember AK is a drawing hand.
This is an old cliché from live poker, and its very misleading. Preflop AK is only in bad shape against KK-AA, which it block, it is nearly flipping against 22-QQ, and it is ahead of everything else. So its certainly a hand, that should usually be played with a lot of aggression preflop. But that being said there are situations, where its correct to fold, because its very likely, that someone has exactly KK or AA, or its a tournament spot with serious ICM implications.
If it goes postflop, AK unimproved is a hand with showdown value, so its most correct to view it as a marginal made hand with drawing potential. Once again it beat every single hand, that did not make a pair, and this is typically the majority of
hands. So there are plenty of spots, especially against a single opponent, where it can be completely correct and valid to bet for thin value or try to catch a
bluff with AK high.
Its very amateurish to view 43, which flopped bottom pair, as "a hand", while viewing unimproved AK as "not a hand". The fact of the matter is, neither of these hands beat anything, your opponent is betting for value, but they typically beat all his bluffs, at least if its a small pot, and until the river they can both improve to a hand, which is often going to be the best. So they are essentially the same type of hand and should be played the same way.