This is all bullshit. Have you noticed it is always "it will kill us" but never HOW the FUCK it will do so?
This is either
1. Marketing
2. He didn't quit, he got fired and did this for attention.
Maybe, but it's also retarded to think terrorists or mass killers won't use it for evil. Of course that applies to any technology. Creating bio labs will continue to get cheaper and someone eventually will create a deadly attack very cheaply and with very little expertise. I don't think regulation is going to stop it