Stop ignoring the point and acknowledge that being a prick like that does fuck all to help.
Again, would you tell somebody with a porn addiction to "stop fucking fapping more than you need, you dumbass. Then go on a date."
You're completely ignoring every single issue besides the most obvious one. "Go on a walk" is hard for people with depression because doing fucking anything is hard for depressed people. "Stop stuffing your face" is hard for people with addictions or binge eating issues for obvious reasons. Again, you don't solve anything by being a bastard about it.
Did I say that? Of course it needs to be changed. You solve absolutely nothing by being a prick about it like this, though.
Leftism is about sympathy and helping people. Not yelling at them like a fucking /pol/ bastard about things they know are a problem, but is incredibly difficult to break out of because of the capitalist systems which created the problem in the first place.
Like I said, you don't get somebody to stop smoking by acting like a fuck like this. You get people to stop smoking by punishing cigarette company execs and gradually banning the sale of cigarettes.
So what's your point here? Just yell at people with addictions to stop being addicted? Does that work with porn addicts, with alcoholics, with people addicted to heroin?
Perhaps the party "for and by the people" should simply not be exclusionist as fuck