um. we certainly are lucky to have an expert who seems to know everything about everything, but about this one thing, she's talking bollox.
the Tuscan dialect may be official Italian (?)
but I assure you people in regions of Italy very much still speak their own dialect, which did not vanish after unification. I know living people who do.
I am sure all of the expert's many other assertions are totally correct so she won't mind an amendment here