Thank you for your interest in the plugin and your feedback.
From the plugin description
Plugin that provides an
[include-mastodon-feed]shortcode to easily integrate mastodon feeds into wordpress pages.The plugin is written in PHP and generates native JavaScript to fetch and render the mastodon feed. No special libraries needed.
It does not generate any IFrames or wordpress posts at all. It does generate JavaScript that then injects the feed as HTML content right where the shortcode is placed. I’ll try to make the description clearer in future releases.
Screenshots would not help to demonstrate this technical point, as the rendered representation of the feed would look all the same to the page visitor. But I get what you are saying and I do find too, that screenshots help site administrators in deciding if it is the right plugin for them.
I am mostly worried about outdated screenshots and having to continuously generate and host new ones. Also demo pages. Don’t have the capacity to do that right now. I’ll try to address that in future releases.