This argument is pretty much the same as the people who are pro anti gun legislation. Take away the right from everyone because of the potential for misuse by some. So when all sockpuppets are banned, except for the people that figured out how to get around any restriction there is that is, 100% of those sock puppets will continue to be dishonest, scam, what have you, while people are lured into a false sense of security because of course there are no sock puppets because there are measures to reduce them!

Scamming sock puppets = bad
regular sock puppets = who cares?