> Compare that to remote backdoor access to everyone's encrypted communications. All they have to do is push a button in order to instantly get access to someone's mail, calls, instant messages, social media, phone location history, etc. Abusing this power is a trivial matter and there is little if any oversight.

Much as you can build a physical policing system with or without oversight and with or without covert powers, you can do the same for encryption. It is absolutely possible to build a system where the company, the police, and the courts all need to agree in order to hand over access — in fact it's more possible than with physical security. It's also possible to build regulatory bodies that make relevant details publically visible.