"If what NBC is saying is true, it undermines
everything that Twitter stands for and is an
absolute disgrace and will aggravate many
millions of its users,"
The vast, vast, vast majority of Twitter users won't hear of this, and the vast, vast, vast majority of those that do, won't care. Twitter can do this because they know that the backlash will only come from the tiniest enclave of users, and nothing will change.
Let's say someone posted a negative tweet about you, and included your contact information.
Would you want Twitter to notify you about it and see if you wanted to file a complaint, or would you rather just sit in a deluge of hatemail with no idea of where it's coming from?
Twitter: Too big to fail?