It’s an RW nutjob.

Smells like them.

Would be likely to have been listening to Milo, then.

He is pure evil. He offers no apologies ever!
https://www.democraticunderground.com/100210805790

As much as this practice scares me in terms of privacy, hell yes. If I were related to this creep let me help you id him.

Meaning either he's been arrested before, had a security clearance at some point, or worked at a job that required fingerprinting (investment banks or intelligence agency e.g.)

Lots of people in the fingerprint database.

Somebody knows him.

Someone on 4chan knows this little incel.

More and more not sounding like a disgruntled employee or spurned lover.

Bomb maker. You can't wear gloves to assemble small parts, very hard to remove all prints from those same small parts. Solution...burn off your prints before you start.
Didn't someone say there was an explosive found at the scene?

a Sovereign Citizen? Interesting if he went through all the Pain to alter his Finger tips. Lost most of mine to Frost Bite,and that is one friggin Painful experience.