Hello there,
thanks for your feedback. That sentence is referring to the new report exports exposure through API functionality that has been just released (we'll officially advertise this only tomorrow). However we'll remove that sentence from the documentation, thanks also to your feedback, since we agreed on not being relevant. The new feature will give you the possibility to request the latest execution of a report through the API. Each request counts as any other synchronous request, so it follows the same restrictions.
Regards