Maybe this will help?

https://support.apple.com/en-us/102431

However:

Please note that devices locked with a passcode are protected by passcode encryption, and Apple can’t help remove the passcode lock without erasing the device.

What’s your preferred adblocker?

I haven’t heard of this being widespread. Did it ever work for you?

I’m curious, too

There’s one in New Mexico that plays America the Beautiful.

https://www.atlasobscura.com/places/musical-highway