Gesturing vaguely at everything is not an argument for anything. Supposing the person you’re talking to agrees that everything is bad, then it’s simply an argument for radicalism, not necessarily anticapitalism or whatever your particular strain of belief is. Someone could, while gesturing vaguely, just as easily argue that it’s because of moral decline, that society isn’t capitalist enough, for race realism, for the need for a strongman to take over, or really anything that’d promise (but almost certainly not deliver) to vaguely fix everything.