I thought it was pretty obvious that they weren’t taking AT&T’s side in that comment.
In any event, the whole thing went down and was determined long before Reagan took office. The case was filed under the Ford administration and prosecuted mainly by the Carter administration. By the time Reagan took office the case had been in progress for nearly a decade, and he had been president for barely a year when the final decision was handed down.
OP just has so much confused about this chapter of history.