> Ethereum blockchain is the database, BAYC can't delete, modify or censor any BAYC users.
But why does it matter what the blockchain says? The bouncer hired by BAYC to stand at the door of their event can "bounce" you regardless. May as well save resources & complexity by having them run a DB since they can ignore what the blockchain says anyway.
> Getting a BAYC is as simple as transfering an NFT from one wallet to another, mint it with a wallet on BAYC website or buy it on a centralized or decentralized market place, anywhere in the world. There is no database with this type of frictionless.
Getting a brand new BAYC involves "minting it" on their website - no different than buying a ticket on Ticketmaster/etc, and I'd argue the Ticketmaster route is easier as you don't have to worry about safeguarding a wallet/installing Metamask/etc.
Getting a BAYC off someone else involves an Ethereum transaction with its associated fees - in practice those are usually mediated by a marketplace such as OpenSea so decentralization/etc goes away. There's no reason the BAYC website couldn't just manage those transfers directly and skip all of the complexity. There's a theoretical advantage where because it all happens on the blockchain you could transfer an NFT without any third-party involvement (depending on how the smart contract is set up, but I'm assuming good faith and no artificial restrictions preventing that) but how many people do this in practice?
Considering the true value of a BAYC is to get access to their exclusive events (I am ignoring the temporary speculation aspect which is is now on its way out), I still don't see what advantages the blockchain brings compared to them just running an old-school members' club with memberships in a DB, since in practice they can deny entry to the event to anyone regardless of what the blockchain says. If they want to make memberships transferrable they can trivially do so on their platform, since in practice most NFT transfers right now happen on a centralized marketplace anyway.