That was slavery and segregation, which was heinous and needed to be stopped: this is the matter of a security organization that can’t just be (realistically) dismantled without fierce opposition from conservative sections of the U.S. government and U.S. society. The best and realistic thing to do now instead of just having it dismantled is to reform it, which this proposal for new ground rules is saying, and it most likely has a greater chance of success.
Sometime, you’ve got to know when to compromise, and this concept, I think, is the best way to do it.
As well, every other nation on Earth has internal security agencies (List of intelligence agencies), many of them quite competently run and not doing what the NSA is accused of doing-are you going to say that they shouldn’t exist? Again, be realistic about this and admit that the NSA needs reform, not abolition.