Where's Kirk's antiques during TOS? I only saw two sculptures and a painting in his quarters in TOS...
Since TWoK portrayed Kirk as being into antiquities, it really doesn't matter what we saw in TOS.
Most of the movies and TV shows that came after TOS were not overtly and completely consistent with TOS -- and they downright changed many things also.
Having said that, I agree with those who said that just because we weren't TOLD about Kirk's love of antiquities in TOS doesn't preclude him from being that way -- it could be that Kirk just never had a reason to bring it up.