Why don't websites say something like this: Your password must be 6 or more characters long. Any character goes. If you use a weak password and your account get

Why don't websites say something like this: Your password must be 6 or more characters long. Any character goes. If you use a weak password and your account gets hacked, it's your fault. And then maybe have a brief explanation of what makes a password weak, but let the user decide if they want to get hacked or not.