I'm a food allergy mom, and the moderator of a group for mom's of kids with food allergies - we don't have a peanut allergy, but because of how many members of the group this affects, I have been following this very closely.
While this is becoming news to the general public, the food allergy community has been aware of this since December (at least, maybe earlier). I know the members of my group all follow food recalls closely, and kherbert probably follows these as well. It isn't hard (the FDA will email them out to anyone who signs up for their free list).
Not all cumin is affected. One member of my group contacted McCormick's and they use a different source for their cumin. Yes, people should be careful of foods containing cumin if they don't know the source of the cumin, but a complete avoidance is not necessary. Just be smart about it.
For anyone who deals with food allergies, this is our nightmare coming true. Something that should in theory be safe has become contaminated, and it has been used in products all over the country. It will be interesting to see how this all plays out in the end.