Honestly, we can demonize any single foodstuff (be it fat or sugar), it doesn't address the core issue: we eat too much and do too little. That's our developed world lifestyle writ large. The solution is as obvious as the problem. Yes, it's easier to blame sugar or whatever else. And I'm sure it's not entirely innocent, but it's part of the bigger problem.
But it in that it's not simple. Of course people like to eat and drink, of course people don't like to exhaust themselves, of course people don't like to be hungry. But we need significant interventions. The cost is otherwise going to be enormous both financially and in quality of life for those affected. Frankly, shit like a small tax on sugar isn't going to do it, nor is letting the food industry water down every proposal.