How are NFTs, or any crypto assets, better in that regard?
The independance from a centralized auth (house auction, bank, law court) is rather moot, because that's what you need to have to investigate, solve and guarantee dispute resolutions (lost, stolen, forged, impersonated assets, unfaithful transactions, illegal transactions, etc.).
Moreover, cryptos exchanges today _do_ act as few centralized points of control.
You still can lose NFTs, lose control on them. You can still have your own artwork being minted by someone else, even against your own will (and to control against that abuse, you will need some sort of central authority somewhere).
You can still forge or impersonate artists.
You can manipulate people on their actual value versus the value of the thing they represent (that is, owning an NFT on an artwork today provides no guarantee of owning any right on the artwork itself).
And that's not even taking into account the energy burnt into it.