People have been stealing sand for 100's of years.
One small gale comes through and puts it all back.
As long as your not using a dumptruck with an excavator it ain't stealing.
Even then it would only take a week to fill in again.
Sand from the beach is free.
Jeesh what a stupid topic.
On the other hand, If you have a fancy concrete turtle baby killing seawall with stolen sand behind it I could see where you might get vexed if someone stole your stolen sand.