Marie Antoinette was among the kindest of the royalties. There was zero meanness let alone cynicism in her, that’s a well documented fact.
The ‘let them eat cake’ was a hoax foisted upon her by the revolutionnaries to rile up the populace. Then and now, leftists
always do fake news. It’s a shame to hear again and again that canard.
The Marie Antoinette thing is fake news as George Washington chopping down a cherry tree is fake news.
They are meant to illustrate something about a person (Washington) or the times (Marie Antoinette). They are not meant to be official entries in biographies.
Perhaps such stories should be prefaced by something like “According to legend…”.