Answer: yes it's dangerous for a person or society to have too much knowledge or information.
Explanation: When one is in possession of too much knowledge or information, they would want to spread it as their bodies can not handle so much at once. It can harm them mentally, or cause them to become prideful in their knowledge and in turn harm them physically, as pride can make a person do terrible things. The information or knowledge they possess could also be used by them to harm others in their own society or other societies, and if this bundle of info and knowledge slips through them to afore mentioned societies, it can be used to harm the original possessors instead.