@antonis, I’m sure you are still recalling: The Police - Roxanne. So and up to my understanding (not sure if this answers your questions), it is about new age of using AI: “IP telephony, for example via messenger services, is also to be intercepted with the help of „Roxanne“.”
IMO, it is about powerful surveillance tool in hands of LEAs, and not about mass surveillance, as you referred to it within this thread title 
. Anyway, this article from the Hellenic side source (December 2019) confirms my reasoning (approach) here. And, in opposite to „Alexa“, just don’t speak language that „Roxanne“ understands (VoIP) and you are good to go (Motörhead - Stay Out of Jail).