But you know those other kids are going to go right back to being assholes as soon as "the magic of Christmastime" wears off.
It seems like the message is kind of, "It's ok to be an asshole, as long as at certain, 'special' moments, you show a token gesture of goodwill."
I haven't watched the whole show through in decades, so it's possible my memory is faulty, but I don't recall any of the mean kids making any sort of apology or atoning for their behaviour. It's just "and now we're all friends because Christmas!"
And then the next day, Lucy's back to tormenting her ostensible "friend".