When your car gets stolen, suddenly nobody can access the data.

Are there any coordinated efforts for widespread scrubbing or removal of these parasitic devices?

When your car gets stolen, even with camera data, the police will not do anything.

I've yet to see an amount of property crime that can get the cops to lift a finger. I've seen them ignore a low-six-figures-stolen string of after-hours break-ins at businesses, captured at multiple location on camera with clear shots of the vehicle, legible plates, and faces of the perps. Just straight-up gave the impression they thought anyone believing they might want to look into it was a moron. And no, given where this happened it wasn't because of that "prosecutors won't charge anyway" thing people complain about some places (it's led me to wonder how much of that is cops just looking to pass the blame on cases they had no intention of investigating anyway).

The city might call you in a month when it gets towed wherever it was abandoned. The cops aren't going to look for it. That happened to me once.

On the "coordinated efforts" front, some anecdata:

Three separate posts on Craigslist in the Community section about Flock Cameras, trying to increase local awareness. Posted to two different cities, various posting iterations (e.g. with links / without, pics / no pics, etc.). All appeared to post fine when entered, but never saw the light of day and were marked as removed within a few minutes.

Any other subject: posts fine.

Try it yourself and see what you get.