They specifically say Proposed laws must not tamper with the technical architecture of the Internet through manipulation of the Domain Name System (DNS), a foundation of Internet security.... We must avoid legislation that drives users to dangerous, unreliable DNS servers and puts next-generation security policies, such as the deployment of DNSSEC, at risk.
There may well be some future form of legislation that has some of the same goals of SOPA, but if it leaves that out then it isn't the same legislation that has everyone so upset.
Any new legislation should be treated on its merits. Be cynical, sure, but give them some credit for that statement - it is quite significant.