Those are two different things.....I didn’t read it as saying Trump should not fire at Carly....I read it as saying if Trump can’t take the firing from Carly - which is substantive (tho wrong headed on one issue) - he shouldn’t be in the kitchen.
Trumps response was thin skinned. Like I said, it is not THAT he responded, it’s HOW he responded that seems to be the issue here. Now I would advise Trump or anyone else to fire away more at Democrats and institutionalized liberalism (judges, academics, congress, media) first.....and ignore the other Republicans. That would go for Trump. That appears to be Cruz’ strategy.
Trump is the front runner, it comes off as infantile for him to play the tit for tat responding to every candidate at 1% who’s firing at him.
What else could it mean?
It means, just as you are suggesting, that she is free to criticize him, but if he criticizes her record—he didn’t make it personal, he only commented on her record—he is being infantile and he shouldn’t be doing that.