If we are talking about Kindle - digital reading here - how does a "page"/ "page flip" be defined with varying factors like - X devices a kindle app can be co

If we are talking about Kindle - digital reading here - how does a "page"/ "page flip" be defined with varying factors like - X devices a kindle app can be consumed on: A page can be of different word length on a mobile than of a tablet?! X What if I bump up the font size to max on my device? Could it still count as a single page flip, if I flip the page? ==> Well the above is answered by Amazon with "Kindle Edition Normalized Page Count (KENPC)" @ https://kdp.amazon.com/help?topicId=A156OS90J7RDN https://kdp.amazon.com/help?topicId=A156OS90J7RDN -> Academic textbooks/ reference books/tech. books etc are not page turners. Are the authors of this kind at a disadvantage with the new model?