Murder is already illegal.
So while a punishment might exist for something, that doesn't preclude trying to prevent the crime form occurring in the first place. This isn't easy work, and of course, it won't work 100% of the time, but it doesn't mean we stop trying to reduce the number.
https://www.fox32chicago.com/news/2-sentenced-to-prison-for-...
Someone put the right 10 digits into a webform? What could we do! They stole your identity!
No, you just didn't want to force someone to walk into a bank to apply in person because that would cost more and reduce your new applicant rate.