I guess I give Amazon more credit that they have some way of tracking read, even if one reads the whole book with no wifi on. They can place a little file on the kindle that gets pulled when wifi is turned on at some point for each book. I can't leave on wifi on my ereaders as its eats the battery. I just turn it on when I charge, or when I need to sync purchases.
I give them credit that they figured that out before they started the program. I also give them credit for knowing that the majority of readers just go read the books and don't worry about any of these other things.
I personally don't really care, or think much about how much or if an author gets paid. I do my part, which is buy the book, or do a proper borrow, be it through the library or through KU and Scribd. At that point I am done doing my part. I paid my money. What the other end looks like, does not concern me.
I start worrying about what goes into authors pockets when they start worrying about what comes out of mine.
I am not going to try jumping through hoops, I should't have to as a honest consumer. I let the services figure it out. Its not my responsibility as a customer.