He probably could've said nothing. He appears to have chosen to applaud her.
It wasn't a bad take, really. He said he was applauding her not because she as a female kicker who kicked in a game. He focused on her "persistence," and he commended her in "overcoming adversity" (such as recovering from broken bones). He said he was most impressed by her halftime leadership in the locker room (an angle on this about which I had not heard). He didn't pretend she performed well as a kicker. He used the term "squib kick," though in connection with her "detractors." He said he hopes his sons the same "have character, commitment, and perseverance." I'm not caught up in the hoopla of Fullermania or anything. But I think Aaron's segment was fine.