Noticed that distinct bias towards gardens and parks too, and after looking at my city, very quickly came to the conclusion that this was certifiably full of shit, i.e.
- a park with heavy foot/vehicle traffic that's half a mile from the intersection of two major interstates;
- an arboretum that's immediately adjacent to a major interstate beltway exit; and
- a beach surrounded by commercial development locally known for its active nightlife scene.
Perhaps just as ironic is a state park in an area known for its retired affluence---where the only major road is a 2-laner that's sparsely traveled---with a higher "quiet score" than 2 of these locations.