Yeah, that’s a myth.
“Yeah, that’s a myth.”
Proof?
A quick search about the topic brought me this at a Wine Enthusiast site....
“The highly toxic element was, for millennia, included frequently in winemaking and storage. The metal was used as a sweetener and preservative, as well as for its ability to impart brilliant clarity to glassware. Its role in wine history dates to at least 2000 B.C., and even extends to today.”