From the article you didn’t read:
Police usually get them after a pursuit or chases, where the driver abandons the bike.
“There’s no paperwork” for most of the illegal vehicles, although Pennsylvania does have a registration process. If an ATV or dirt bike’s vehicle-identification number doesn’t come back to an owner, there’s no proof of ownership.
“If we can’t prove ownership, those are the ones we’re destroying,” he said. “We own it because no one claimed it. ... Instead of selling them, we destroy them.”
It’s Pennsylvania - they’re zero-bailing the drivers.