I believe when we last touched on this topic in 2016, PPMs were registering streams, so that's why I asked.
Nielsen should account for internet streaming, because that's how, from my experiences, the majority of folks listen to radio stations.
They do show Internet listening. The main issue is that most Internet streams, if they "make the book", have relatively low numbers. Further, any stream that is 100% simulcast is combined with the numbers for the OTA station and not listed separately.