Why are all bitcoins fatal flaws discovered by brand new users?
Because we have clear view.
If you are concerned about centralization then why are you not mining?
Because we do not like any ponzi
You are likely not even running a full node.
Because of no reason for us to help early adopters to take profits
You are allowing any centralization to take place.
No. It is your problem. Not our problem.
By the way, what we are calling centralization is not actually centralization. Miners are decentralized and spread around the world.
It does not matter where sha256 is calculated. The attacker should have control how the block is assembled.
If the concern is a 51% attack then you might want to ask yourself "why would anyone do that?"
The right question we ask is: how to avoid any problems to our pockets?
It would cost millions (a billion?) and you wold receive nothing of value for your efforts.
It would cost nothing. You are blind if you do not see how to do it without expenses.
People who have millions of dollars did not get rich writing checks. It is illogical to launch such an attack.
You will see it very soon. Trust me.