Surely you mean lizard Hugger??
The primary sand dunes are critical habitat for a number of species even in that clapped out scrub, but those that don't undrestand that won't want to, so won't bore you with what a stupid idea is from that perspective, however a coastal disruption of primary dune sand movement, there's a real potential to stuff up any potential for decent banks forming, which doesn't really matter as it's always crap there anyway.
On on the plus side if they were clever about it they could push the sands from the dunes put onto the beach and over the high tide mark into the water a bit and potentially create a bank for a bit, mix it with road base and some limestone Whalla !! artificial reef maybe?