You don't grasp that the ease of hacking a target is irrelevant.
Monero does not need to be hacked a LOT on regular basis.. just once !
"Hacking a cryptosystem" is not the same as "hacking a computer". I don't know what you imagine by "hacking monero once" ; but if you apply whatever you imagine to bitcoin, then all of bitcoin's secrets keys are compromised too. Because "you have to hack bitcoin only once".