Read this line from the Last Chance article:
"We had opportunities in the 1980s to really stop this, to get ahead of the curve. And people still don't seem to realize this isn't something we can wait on. While we were arguing over what to do, the process was gaining speed."
I have no reason to doubt the accuracy of that bit of analysis.
Then read about Edwin Edwards in prison. While we were squandering an oil boom during his reign in the 1970s and laughing through his restoration in the 1980s and 1990s, our coastline was disappearing.
With all due respect to the Krewe du Vieux, Screw you, Edwin Edwards.