I disagree. The curve change doesn't reduce the incentive to self vote or delegate to bid bots, and if that were the only change it could even make things worse. The other two changes (cheaper downvotes and higher share of rewards going to curation) do reduce the incentive to self-vote and delegate to bidbots. That does not necessarily mean they would solve every problem or even any problem, but its wrong to say they don't change incentives.