Preface: I might be too influenced by Adam Curtis. But what I find most interesting about this reply/rant, is that it - like most of left, always seems to envision a world without power. And you can't confront entrenched power, without seizing power, and using it to transform society.
It's worse than that. Fundamentally, the problem is that people are not angels. The left recognizes, correctly, that the people in power - the leaders - are not angels. So the left wants them gone - wants there to be nobody in power. The problem is that the people who are not in power also are not angels. Left to themselves, a fair number of them will find ways to harm (economically or even physically) people around…
The way I see it, left doesn't want people to have power. So it limits politician's power. And then, the financial/corporate interest seize all powers, and use it as they will.