That's what the GP was saying, I think. Once they get the MAC address, they can find you. Not via software on the phone, from exfiltrating and using shady third parties that collect data from access points, etc.
Okay, but if there's collusion between the app developers and external routers then it doesn't matter if the MAC is randomized. The app can still see the current MAC address and report it, and you can still be located, if nothing else, to within the range of a wireless router. Nothing is solved by randomizing the MAC address.
