Oh, you can run out of voting power. It's just most people don't use more than 20% a day because it takes a day for every 20% you use to recover. Once you hit 0 voting power you can't vote anymore I believe unless that changed with rc's.

Also, there is nothing to say it will turn toxic, like most any social media people came from people are clearly happy to do it for free. So what if you don't get paid out for every post. Why is it expected that you need to? This has added benefits to stop spammers and abusers, way more than it would be used to abuse normal users. Also, no one can really do much damage other than people who have a lot of stake.

If you aren't being downvoted now I doubt you will be by a whale in the future. So a model without incentive doesn't incentivize them to hit a post that is ten dollars they are more likely to go after bot votes.

The only thing people should be worried about the new eip system is whales powering down to alt accounts to take advatage of things.