The point is that this isn’t on the manufacturers, this is on a person being unprofessional by sharing information for the sake of appearing “in the know”.
Will the information leak? Yes. Will the manufacturers be surprised that it does? No. Should those two answers justify doing it? Absolutely not. “It was going to leak anyway so I might as well” is not a good attitude to have, and it projects pretty poorly on a business.
But, regardless of your argument, or my argument, the simple answer is: “don’t do that shit here”. There’s no need to debate this further.