Well, as a positive, Steve had gotten over his embarrassment regarding his lack of recognition of Jean's team name?
...because he was too busy trying to figure out what to say to her other admission. Jean was a nice woman. Jean had reached out to him, and hard as it was, he did not want to judge her by the actions of... uh. Whatever a Phoenix Force was. But. It was a lot for an anachronism to take in.
He frowned for what felt like forever as he searched for the right words. Then, "...that had to be hard for everyone involved. I'm sorry. It makes a few years on ice seem like nothing. Thank you for sharing something so personal with me."
Steve didn't want to trivialize. Words like go rogue and put me down weren't to be treated lightly, but overreacting would do no good, either.