And now more confusion, brought to you by Amazon.com:

As I was typing the last post I got an update message on my iPad that there was an update available to install for the Alexa app. I installed it and here is what it states: See attached image. Notice that the text seems to indicate that the Video calling and Drop In calling are available via an iPhone, no mention of them working on an iPad. So why they include the Drop In option in the Alexa app on the iPad is anyone's guess.

The Drop In option was already available before this update to the app. So no telling how long ago it became an option.