My understanding is that this is just showcasing a website that introduces/makes it easy to digest the EAM as a concept, not that there's anything particularly worrying happening on these frequencies in the present moment.

I don't monitor these regularly so perhaps I'm wrong, but given it's encrypted (likely with a OTP), you'd have to be mining metadata and making some second order dot connections to really get anything meaningful out of this without the cipher/OTP/some way to decrypt it and understand it.