As I stated in the post the overall affect for authors -

Author Rewards
With the implementation of the SPS and 50:50 component of the EIP, author rewards percentage of the pool will be decreased somewhere around 42.2%.

The goal or idea is though that with the combined components of the EIP taking effect, there will be less spam taking rewards and more individuals curating (as it's now profitable to do so). Which could mean even though the author rewards percentage is lower, the reward pool will be bigger (less abuse taking it) and therefore the actual rewards an author receives will actually increase.

I believe these changes will take time to balance out, as with any changes, so I personally think we should prepare for an immediate decrease in the post payout we see. But to keep calm and let the system begin to take it's new form. It is my hope that over the few weeks after the hardfork, authors contributing positively to the ecosystem will begin to see their rewards increase again. This is the goal.

Yes overall percentage of the pool for authors will be reduced by 42.2% but the rewards pool will be bigger and therefore their cut will be worth more. That is the desired effect anyways.