In the excerpt taken from a discussion on urban wildlife, the author presents various perspectives on the coexistence of wildlife in metropolitan areas. The tone of the passage varies between concern for the animals' wellbeing and annoyance at their disruptive behaviors. Consider the following statement from the passage:
'While the sight of foxes darting through alleyways and raccoons rifling through trash can bring a smile to urban dwellers, the underlying implications of their presence are far more complex and often troubling.' Based on this context, what is the author's primary purpose in this statement?