Yeah that looks like a small wedding to me? The story here just seems to be that they didn't clean up properly? Not sure why the news story seems to be claiming they misrepresented the size, they just had a catered dinner party it seems and didn't clean up (which is bad).
In the desert if you destroy vegetation it may take years to recover.
It's not the specific case here that I find a problem, rather the compounding effect of all of us destroying a bit of vegetation until the planet is paved in asphalt and trash