Coming to a national health system near you.
So what they are saying is that you have to be healthy in order to receive health care? And, if you are not healthy, they will refuse to let you have health care.
Firstly, private treatments outside the NHS are and always have been available to those able and willing to pay for them. (I mention this because I've notice that commentators outside the UK aren't always aware of this.)
Secondly, having read more detail elsewhere than the posted article about these 'smokers refused' policies, it's clear that they are not a blanket ban on any treatment for somebody who's still smoking. They are only ruling out procedures which are known to be ineffective when applied to a smoker. So it could be argued that this is a medical decision, not a political decision, no different from any other where a particular procedure is known to be medically contra-indicated, given the state of health of the particular patient. (The obvious objection to this is that it would be hard to maintain the distinction between a purely medical and a political exclusion, slippery slope arguments etc)