The city and the individual disc golfer who threw the disc are only marginally responsible for this situation - the majority of the blame is on the disc golf community at large - all of us here included.
We are so anxious to have more courses in our areas, will throw discs just about anywhere a basket is placed, and will often abuse the privilege when someone works hard to install a proper course.
Forget the analogies. Do we really think it was the city's idea to have this course, or did local disc golfers convince them to put it in? And was it new players who don't know any better who made the case, or was it likely an established, experienced group who wanted to have another course they could play, to pat themselves on the back and demonstrate that they are "growing the game"?
And what about courses like Flyboy and, more recently, the Blockhouse? These gems close because the disc golf community either acts irresponsibly themselves or are too laid back to police the idiotic behavior that causes courses to shut down and make the sport look bad.
It's time we started doing better - lobby for unsafe courses to be pulled, call people out for their inappropriate behavior in shared public spaces, and interact positively with people who don't have a clue and dare to get in our way.
This quote seems fitting: "A person may cause evil to others not only by his actions but by his inaction, and in either case he is justly accountable to them for the injury.” - John Stuart Mill