Apparently in the time of King Louis XVI, Marie Antoinette had a play farm where servants would take, clean and replace chicken eggs under the hens so Marie Antoinette could gather them later. Many nobles in France had such play farms. The pond story reminds me of this tidbit.
We know the Qu'ils mangent de la brioche scandal was fabricated (though a lie used to turn opinions against the royal family). In truth it was the failure pf Church and King in the Estates-General to read the room and then the King's failed effort to escape France that sealed the Queen's fate in the Place de la Révolution.
Queen Marie Antoinette was by far not the worst of spoiled nobles, just in way over her head.