Interesting. But the curation rewards are not burned. So infact it gives a way to earn curation without contributing power to anyone else.

You are correct and that's not a bad thing.

Another way to stop inflation is not vote at all.

This is false. It would have no affect on inflation what so ever, or would just forfeit your ability to influence where it goes and your share of curation. The same amount of inflation is printed regardless if you vote, it is just where it goes that changes.