Being a cop (at any level) does very much bias your view of things. Nobody calls the cops (or the FBI, DOJ, CIA, etc.) when things are great. Police tend to only see the absolute worst of human nature and the worst things that people do and develop biases accordingly.

I've known a few cops and they all have stories that are hard to hear and are worse than what you hear on most true crime shows. I assume access to high level intelligence involves endlessly seeing cases where people were caught attempting to purchase weapons grade nuclear materials, endless plots that never happened but are very scary to read about, etc.

That being said, it is bias and it shouldn't be allowed to unilaterally influence politics. Banning strong encryption is both impractical and destructive to our society and economy.