I doubt that. If I had non-public information that could materially impact the price of a company's stock, I would not expect to get away with selling that information to anonymous buyers via some shady broker.
But if someone were to trade on the knowledge that a supplier had delivered faulty airbags to an auto manufacturer without telling that manufacturer, I doubt this would be looked at kindly by the courts.
But I agree that the metaphor is not ideal. Selling 0day exploits to that broker is much worse. Any seller would have to have a reasonable expectation of aiding organised crime or terrorism.
It's an amazing business idea!
- people with insider info can use that info to get rich but without insider trading
- targets of insider info can be coerced into buying the data to prevent selling to third parties
- and of course we can trust the broker to never sell the data to third parties
I'm being a bit sarcastic of course.