KEO says she recently converted to CASH. From another article, each point is worth approximately 1.6 cents, but dollars are only whole dollars, so it requires 62.5 points to make a whole dollar. Maybe, if my calculator calculations are correct. The fact that KEO might not be featured as prominently in the lists of top contributors could help explain why she doesn't see the same level of points awarded. The fact that more people are getting viewed by more people is generally a good thing. Except perhaps for KEO and a handful of other people who were regularly among the most active commenters, most prolific publishers, or whatever the old categories were.
If the points value has to do with the numbers of visitors to pages, and your prominent location is no longer as prominent, then yes, it might make sense that your points awarded might be less.
Remember folks, points are just a way that Tom has of helping foster community. Sharing in ad based revenue generation, or whatever you wish to call the particular model.