Stockmaniac,
Personally I wouldn't worry about what Ron or Dreamstime is doing. At the end of the day the way I see it is his kind of contribution is going to raise the profile of the industry and that will have some knock on benefit for everyone. Everyone's work needs to sell on its own merits and if it isn't good enough then it wont sell. As the standards raise we all need to get better or fall by the wayside.
Any time looking at his EXIF data & comparing this against the allowed standards might be more profitably spent taking pictures yourself.
As for having lots of pictures from different angles then surely this is good for the buyer - I've bought artwork myself and have always appreciated being able to get many variations on a theme to better fit whatever vision I had at the time.