It sort of depends on the nature of the contamination. If it ends up being negligence, if they ever hid anything about it, absolutely. Jail for the executives, fines for the major shareholders.

And if it's not negligence then maybe we need to raise the bar for testing such that any contamination indeed counts as negligence.

But lead is a pretty common metal. If it turns out that there's an undiscovered recessive gene for lead hyperaccumulation in the cinnamon tee and that tragedies like this are how it gets discovered, then we need to focus on raising the testing bar and not on punishment. Otherwise we create a situation where people are incentivized to hide data that could ultimately help prevent things like this in the future.