Breaking the memorial breaks the Prime Directive.
Leaving a Buoy breaks the Prime Directive.
You know how when some thug steals a street sign in your nighbourhood?
You know what that road is.
You've lived there for years.
Replacing it doesn't seem a priority.
Leaving the Buoy was redundant for the most part.
And imagine really, if well armed Russian paratroopers dropped into your nieghbourhood and fixed all your missing road signage, then filled in all your nasty potholes and trimmed your hedges?
Shit you were planning to get around to?
That's cause for war.