I think the author doesn't understand mindfulness. Achieving mindfulness can only help you to know what exactly you want to change and what you can change.

It seems to me that the author favors radical change, either in general or he assumes everybody knows what exactly must be changed and how. Which I doubt.

"Capitalism" has spared the Western world increasingly more suffering, so there is no point in "going back" anywhere.

While I do favor corrections in terms of wealth distribution, I'd be hesitant to implement any unproven radical changes.

I fail to see why mindfulness meditation is any obstacle to this.