"so what's your beef?"
I'm a big fan of shoreline recreation projects: piers, man-made swimming lagoons, artificial surfing reefs, hot ponds, man-made beaches, etc. So are most people. Shoreline recreation projects are a huge draw worldwide. Here is one of Hawaii's most beloved projects: Magic Island.
https://www.google.com/search?q=Magic+island&client=safari&rls=en&source=lnms&tbm=isch&sa=X&ved=0ahUKEwij2tfI5obeAhVEh1QKHRWBCy0Q_AUIDygC&biw=1252&bih=646
Today, even a project 1/100 of this size is near impossible to build in Hawaii because of environmental rules. Might not matter that much on Maui or Oahu, with their ample beaches, sheltered swimming spots, quality surf breaks.
But it matters on the rocky Big Island.
Example: Look at the overcrowding in Kona's Kahaluu Bay and the damage to its coral. Users aren't just tourist snorkelers looking at fish; locals use Kahaluu as a safe, calm place to enter the ocean.
https://www.hawaii247.com/2012/03/13/res...f-kahaluu/
Kailua Kona has limited safe swimming. Solution: Built a new swimming lagoon somewhere. Expansive Old Airport would be ideal. Few years back the county put in all sorts of park facilities at the Old Airport; yet officials wouldn't remove a single rock by the ocean to create safe swimming. Not even a keiki pond.
The number of environmentalists I refer to (hardcore environmentalists) is probably less than 10% of the total population. Yet this small group has a hugely constraining impact on the public interest of modifying coastlines for swimmers, surfers, hot pond bathers and other shoreline users.
In a year from now the road to Pohoiki will probably be open. And 700-1000 people a day will cram into that small shoreline. And county and state officials and environmentalists will probably go round and round for another 10 years, dithering and debating on shoreline modification.