Registrars are a big part of the spam problem

Registrars are a big part of the spam problem. And the fact that they will sell (or provide freely) registration obfuscation services to withhold meaningful registrant contact data shows that many registrars are still in bed with the criminal spammers. Come on, if you really have some reason to keep your registration data private, there are better ways to do it than letting your registrar do it for you. You could just as well get a PO box and use a free email account somewhere, which would accomplish the same thing but still have some degree of accountability. As it is, registrars have been able to withhold the contact information for their clients and there's been no accountability anywhere.