One of the creators of well-known animated series, such as "South Park," Trey Parker, frequently uses humor to make social commentary. He is making fun of a culture that places a great value on material belongings and status symbols, particularly in families, in this specific quote.
Consider a family as a tree, where each branch stands for a family member. One way to interpret Parker's statement is as branches vying for sunlight—or, in his case, attention and approval—by purchasing homes for various family members. This metaphor captures a trend in society where people feel compelled to demonstrate their success and concern for their parents, siblings, or other close family members by purchasing homes for them.
Supporting one's family is regarded as an act of filial piety and love in many cultures. Parker's strategy, however, draws attention to the irony of interpreting pricey real estate deals as a sign of love. It implies that although purchasing a home may provide for material needs like housing, it may not always take care of one's emotional or interpersonal well-being.
Parker uses this quotation to get people thinking about what real family support looks like. He suggests the value of real connection and understanding rather than just material contributions.