What is true of England does not have to be true of anywhere else. You can compare all of the developed nations that have UHC, and they all tackle the issue differently. Even comparing England with Canada, our UHC systems are not the same. Canada has not considered taxing people based on their BMI, or their personal choices in life. Everyone is taxed according to the standard taxation scales, and all their healthcare contributions go into the same pot.
I'm not sure I follow. Why does UHC equal the government controlling your behaviour? It is not the government paying for your health care, it is you via your own tax dollars
. The government is not entitled to control you just because they pay out what they owe you.