I think maybe you're paying attention to the wrong part of that story. It's not the act of putting out the Buddha statue; it's the continuous care that a community of people put around the Buddha. The neighbor that plonked down the statue just contributed a statue. The community of Buddhists who adopted it, brought flowers, cleaned and improved the area are all doing exactly what the grandparent comment described.

The "success" of this was contingent upon there being a Vietnamese community in the neighborhood that took care of the statue and the space around it. To be clear, using another culture's religious icon to keep trash from piling up on your street is exceedingly disrespectful.

Thank you for this link.