A slightly more charitable view is that they are trying to actually make progress given the circumstances they have. Looking at their 'Advocacy' category, a previous post talked about closing sections of the same street to cars, but they do focus on streets (I suppose that is related to the street already being public property).
It's legitimate, in my view, to reclaim streets for the use of people without actually tearing up the asphalt and putting down grass. The issue is that the notion of a public space implies social encounters: friends are met and made, issues are raised and discussed, action is proposed and taken. A focus on how cars use roads whitewashes all of that because you can't do any of that from the seat of a moving car.
