I would say logarithmic curve encourages Sybil Attack and stake splitting. How could it possibly do the opposite?

Instead of upvoting one post for $100, ten posts will be upvoted for $10. Anyone who doesn't pivot to the new system is the one who loses money. Guess what? That's not going to be the big stake holders.

The rules can't be changed to force inflation away from the whales because the whales control the changes. In general, when you make the rules more complicated they'll be the ones to game the system while everyone that doesn't adapt will be the ones who lose money.