How comes Blockchain.info generates private keys using block hashes or tx id instead of random numbers. Who had the privilege to change the key generation methods?
The do not. Stop spreading FUD. Don't be an idiot, read the thread.
What I am saying who put those code there and why Blockchain.info did not aware that the key generation program had been modified.
If you did read the thread, then you must be smoking something good

Blockchain.info checked their code repository, these addresses are not generated from them.