[CryptoPunk]

>>There's no purpose in asking a user to run a full node to write to a blockchain. A user/client runs a node to verify they've been paid.

This is a totally illogical statement.

You can't get paid if you can't write to the blockchain. How are you going to spend what you're paid if you can't afford to write to the blockchain?

>>If you're trusting someone else to tell you you've been paid, you have centralization.

I've already addressed this: the risks associated with relying on a dozen blockchain explorers to validate the blockchain are nothing compared to the risks of relying on someone else to hold the private key that controls your funds.

What they're all going to lie about what transactions are happening on the blockchain? It's open source, public domain data. There's no limit to the number of sources you can poll until you get a confident estimate of the true state of your transaction. Consequently, the feasibility of such a deception being pulled off is astronomically low.

In other words, you're advocating throttling write-access to the point that the Bitcoin-Core blockchain is not able to provide practical utility to the vast majority of the human population, to ward off a total non-risk.