In the scene, a character is playing the role of Linus, and it's noted that Lucy, traditionally depicted as his sister with black hair in the comic strip, is involved. The concern is about how their portrayal might be perceived, especially since Lucy's usual appearance helps distinguish her. The mention of the comic strip emphasizes the differences between the animated or theatrical adaptation and the original drawings.
The quote also hints at the humorous and light-hearted tone of the show "You're a Good Man, Charlie… Brown," suggesting that the changes or interpretations are meant to entertain. The references to Meredith, Jacky, and James Patterson seem to indicate the context involves different media or literature, though their connection to the scene isn't explicitly detailed.