
Wireless ADB pairing possible on stock LG OS, all thanks to a little app called DevSwitch! Allows you to pair apps like Shizuku via Wireless ADB without ever needing a cable.
LG for some reason hid this setting away from the Developer Optiions menu, so you wouldn't be able to access it normally. But thanks to DevSwitch, that is no longer an issue.
https://f-droid.org/en/packages/app.devswitch/ (still at v1.1)
https://github.com/retransmit/DevSwitch (latest at v1.3)
Happy tinkering!