What do you call a willing victim please? How a victim could will to get scammed by somebody? I don't understand.

You should pay more attention to the words you are using here, because one can think you are defending scammers and laughing at the victims.
It's very easy to scam people with a mandatory KYC. The scammers just need to ask more documents till the victim is not able to provide them. Or just reject the documents sent by the victim by saying they are not valid or they are fake.
Indeed,,, I do not see the difference between a willing and unwilling victim. You are a victim if you got scammed, regardless of whether you gave it up willingly,,, in fact unwilling victims may not even be aware of it.
Definitely sounds like he is not sympathetic to those who got hit by KYC. We know often enough in this forum how many people got tricked by it.
Yes some people like to despise victims and even to insult them sometimes in order to convince themselves they can't find themselves in this situation. That's a pretty childish way of thinking, I think. Instead of attacking the victims and laughing at them like cowards they should defend them and attack the scammers to stop these noxious practices.