Comment by db48x

It’s less about the ecology and more about who has the right to make modifications in a public park. Usually, whoever creates the park (whether it's a city, county, township, state, or the federal government) puts someone in charge of the maintenance of the park. Even if they’re doing a bad job it’s usually considered a bad idea for visitors, even locals as in this case, to take matters into their own hands. Certainly if every visitor started digging things up or cutting down trees then there wouldn’t be much left of the park.