I didn’t comment on the FA’s words.
I’m still saying things were more nuanced than what you said. I wasn’t there and don’t know the circumstances, but his response could have been understandable if he saw another man mistreating a woman. Or he could just be a jerk. Thus why I described the situation is nuanced.
What I was saying is that the report that the employee was trying to pick a fight with the passenger is flatly wrong. I am reserving judgement on what happened before. My best guess is the employee accidently hit the woman with a stroller and it came close to hitting the baby while he was taking it off the plane. Not sure how negligent he was but it seems the passenger judged he was bery negligent.