Ring cameras are privately owned, installed on private property, by the choice of the property owner. Data sharing is under the customer's control unless a judicial warrant is involved.
Flock cameras are a completely different situation. They're installed on public property, data sharing controls are an utter shitshow, and they give police the ability to do unconstitutional dragnet-style fishing for crime and even pre-crime, i.e. "suspicious patterns of behavior".
Equating the two is a complete misunderstanding of what's happening, but companies like Flock rely on that kind of ignorance to push their product.