I imagine the first image file would’ve come well after the first text transmission, and would’ve required the development of a binary file transfer protocol. Maybe they’re talking about XMODEM and the BBS era, before those BBSes were eventually networked onto the internet.
Yeah, Google does the same thing, but it launches the specific app in order to play from that screen (and not every app handles that gracefully).
What’s interesting about Amazon is that they play the actual content in the same app, even when licensed through a subscription with another service.