Let me break it down for you then I'm done with this dance.
It had been proven time and time again that the most effective way of helping people to lose weight long term is through support.
Either by them losing weight/getting fitting with a friend, attending weight loss meetings, logging with one of the numerous weight tracking sites, visiting a dietitian. Whatever It has proven to work better than someone going it alone.
All you do by bullying fat people and belittling their very existence and worth is make them feel more isolated, alone and ultimately helpless to change themselves.
So if you REALLY want to help fat people because you're worried about the healthcare industry then actually help them by offering support to them. Be their workout buddy, their motivation helper. I promise you it works so much more than bullying ever ever could.
And if you just want to bully fat people then congratulations you're a dick.