You’re still relying on one central server though because of the fundamental problem OP laid out: the blockchain is designed for servers, not clients. There is

You’re still relying on one central server though because of the fundamental problem OP laid out: the blockchain is designed for servers, not clients. There is no API inherent to any chain and thus one must be grafted over it by a web server. Things will tend toward one or two companies because those will be the ones who can afford to run such services and then they will have funding to create more features and better documentation and do dev evangelism and you know the rest. Just look what happened already once OpenSea removed his NFT.