thx for your post, can you please link to a post or name the page / or code where we can find more details how the post payout exactly functions?
As far as I can remember the whitepaper says, that in the long run round about 5% of the inflated steem is used for post rewards (not counting the different initial distribution in the first months / years). This sounds like the amount of steem for block rewards per given time period is fixed. Therefore logically voting for something would decrease what all others get.

But so or so, even the current exponential payout algorithm could be done in a way, that instantly pays out. The only problem would be flags that reduce the payout. But this could be implemented that way, that flags simply reduce future payouts, or there is a time period of lets say 24 hours that flags could reduce / negate the payout transactions.