"Walker said Trump Mobile is evaluating whether it needs to notify customers of the exposure of their personal data."
It was confirmed home/payment addresses were leaked, how is that not worthy of notification?
There was a time when telcos would print this information in a big book and deliver it to your porch for free.
Because who's going to make them?
It's worthy if they think they'd get good click through rate on "privacy protection service" scam links in the emails.
There are regulatory rules on when disclosure must occur. They're saying they're not going to bother if it's not required.