Risk management gone mad?

I've just come back from a couple of months in WA. We didn't do any of the long walks, but we did do parts of the Bibblemun and Cape to Cape tracks among others. I couldn't get over the signs placed anywhere you go access to "the bush" or any other place outside. While I see the value in the "Cliff Risk Area" signs where there were cliffs, I found the "Beach Risk Area", "River risk Area" signs a bit over the top advising about the obvious. The beach risk area signs warned beachgoers of water and waves.
At Canal Rocks there's a boardwalk to protect the fragile environment, and I could not believe the "Boardwalk Risk Area" sign. There should have been a "Warning Sign Risk Area" sign, and it would warn readers that they risked being bombarded by signs stating the obvious - that if you get too close to a cliff you might fall off, that you can drown in the ocean, and boardwalks can be dangerous places. It was hard to take a photo without a warning sign in it.
At Canal Rocks there's a boardwalk to protect the fragile environment, and I could not believe the "Boardwalk Risk Area" sign. There should have been a "Warning Sign Risk Area" sign, and it would warn readers that they risked being bombarded by signs stating the obvious - that if you get too close to a cliff you might fall off, that you can drown in the ocean, and boardwalks can be dangerous places. It was hard to take a photo without a warning sign in it.