What usage access sees
Usage access only tells the app which app is in the foreground. Nothing leaves your device.
Auto-Pilot needs Android's usage access permission so it can notice when a streaming app comes to the front.
It only reads which app is in the foreground. It cannot see what you watch, and nothing about it leaves your device.
To grant or revoke it, open Android Settings, Apps, Special app access, Usage access, and find JustCoffee VPN.