This might be considered a minor spoiler, I’m not sure – the physical boardwalk was damaged, but people continue to refer to that area as “the Boardwalk” sometimes in the subsequent arcs.
With that said, don’t take the maps *too* seriously despite their impeccable presentation; they are fan-made. You’ll notice the Protectorate HQ is shown as on an island in the Bay when it was described in 3.4 as actually on a refitted oil rig, for instance.
Ah, fair enough. And yeah, better take them with a grain of salt.
Another thing I noticed besides the presence of the Boardwalk and PHQ, and the absence of the Wards HQ, was that Lake Heroic was on the Docks South side of the border between that and Downtown, despite repeated mentions of it being “in the middle of Downtown”.