This is a very hyperbolic take. Police do not have access to the cameras, only the server stored footage, which is both optional to share and optional to even participate in.
https://arstechnica.com/tech-policy/2019/08/police-can-get-y...
Ring lets police know that potential video evidence exists, and with that knowledge, they can then get a warrant to obtain the potential evidence from Ring if you choose not to share it.
Most people purchase Ring cameras for the cloud integration aspect, anyway.
Nobody cares about physical access to essentially disposable cameras. The stored footage is the whole game.