For example, imagine being unexpectedly served a full-screen ad when you attempt to make a phone call, unlock your phone, or while using your favorite map app’s turn-by-turn navigation.

That developers try to find the edges of the grey area between what is profitable and illegal is human nature. IMO you should blame the ad-serving company--aka Google--for serving this type of full-screen ads in the first place.

I have disabled this ad type specifically in AdSense on my sites to every show them on pages where I have the auto-ads feature switched on. They are way to intrusive for a company that once used the mantra "Don't be Evil". I use some apps on my phone where they appear and it is only because there is no alternative app available that I continue using them.

Appears housekeeping at g is getting high gear. EU examiners and local politics are having an impact on their laize-faire corporation. Removing bad actors is a great first step on reducing any abuse that legislators or regulators might point out...