Or perhaps you just didn't itterate it correctly, tried to make an invalid point about net contribtuor vs net drain and then felt that by throwing an insult about intelligence it some how might have helped bolster your argument.
What I was suggesting from the start was that no matter whether you are earning tax free, mid bracket, or 40%, you should have a tax against you for being fat. I never mentioned this concept of being a drain, it is something you incorrectly inferred. By "paying their way" I am simply suggesting that should someone be fat, they should be made to pay for it as is reasonably decided. To me, the concept of being obese and then receiving free treatment for it verges in the stupidity of people who have breast implants on the NHS. I think it's ludicrous, when the money could be used for more life threatening conditions that people had no choice in contracting. The crux of that example is that a fat person can quite easily do something to remedy their fat state, the breast implant girl probably had a much more deep seeded mental issue. You don't need to spend millions of NHS money to tell someone that eating less cake and getting up off their ass will rectify their problem.
So to your question then, if the NHS are providing more suport to overweight people, then yes I do believe that a "few quid in tax" will help considerably because in real terms, it won't be just a few quid will it? Whether it be some kind of fat related income tax or (more viably) a high duty on junk food, that will result in a lot more than just a few quid. Such a contribution will not only raise revenues to contribute to the stretched NHS, it will also avert people from eating the junk in the first place. Several colleagues quit smoking based solely on the cost it brought to them compared to when they started.
Does my point make sense to you? I hope it does, but I'm not confident you will understand and it will go over your head, because only stupid people allow themselves to get fat. See I can do it too