The SEC has enough power to shape regulation to neuter some of those clauses. For instance, they're able to apply the $1m cap to fees collected by the portal (not amount raised) or add exceptions for certain types of offerings. [1]

So in theory they could add exemptions or weaken other clauses. I'm not sure exactly where the line is drawn (e.g. can they entirely rewrite the JOBS Act?) but I believe the rules outlined in the JOBS Act are mostly to express intent of Congress and it's the job of the SEC to implement them in a way that works and maintains the intent.

[1] They request comments on those ideas and more in the big PDF. See page 20 of http://www.sec.gov/rules/proposed/2013/33-9470.pdf