When Coil did their demos years ago the payment streaming examples were videos and music. A pay per minute kind of deal. Payment streaming for read content does sound abusive especially for slow readers.
Web Monetization supports multimedia content monetization as well (you place the `link` in your `audio` or `video`). Don't forget that you are in control. If you're a slow reader, adjust the site's amount, so when you spend a long time on a page they don't get excessive payments.