As the page points at, the malicious website does not recieve a hash of the password, but rather a public key derivied from the password: "The worst attack a ma

As the page points at, the malicious website does not recieve a hash of the password, but rather a public key derivied from the password: "The worst attack a malicious server can mount is an expensive brute force attack, attempting to overpower the rate-limiting function and eventually guess a password that recreates the exposed public key." That is a very different attack to try to pull off.