It's significantly easier to find who is responsible, and to sue them or arrest them. You can certainly afford to sue them more than a $20B company.
In contrast, the operator doesn't even have your phone number, nor demand a major corp email address, both things twitter required. You could log in via tor if you wanted.
Twitter could have sold your data, accidentally leaked it via an API or some cloud bucket, or it could have gone out with the help of a foreign intelligence operative employed there... And you have no hope of proving how or why. Their internal controls were incredibly lax. And the FBI would tell you to go away.
