If you’re unfamiliar with the change being implemented, Google is using every android device to detect every other device and report that location to a central database. You can then go to the Find My Device app or website and your device can be located if it’s been seen by any other device.
There’s no need for the user to access anybody else’s device.
My concern is that my privacy is now being invaded by all the scanning devices in my area, and everybody’s movements are even more transparent for the data brokers.