This problem is solved by redistribution (i.e. whale selling)
I totally agree.
Cutting whales' curation in half does not help anything if it also cuts non-whales curation in half (or worse, pushes non-whales below the minimum floor where they go no curation rewards whatsoever), and that is what was done.
What level do you currently need to be at though in order to make any serious money from curation rewards though? 50k? Does cutting that from 50k to 25k really provide much more incentive to power up? Regardless of whether the split it is 75/25 or 50/50, I think the threshold of SP needed to really make a difference is so high, that nobody other than a huge investor is going to see this change as an attraction to power up.
And finally, what is happening by piling on even more content rewards? A few very successful bloggers are concentrating the bulk of the rewards, amassing huge portions of stake, becoming the next whales, and still not helping the little guy (btw, many of them are using automated voting now). This is not really solving the problem either.
I don't completely agree. While most of the rewards are going to a handful of contributors, there are still a significant number of small users who are getting a lot of SP from posting. I think way more users are gaining SP from authoring than from curating. With a 50/50 split, less money would be going to low SP holders through posting, and more would go to high SP holders who get the bulk of the curation rewards.