This really misses the point. Any well-informed individual can cut their sugar intake if they are careful enough.
But that has no effect on the massive public health crisis unfolding that (e.g.) absolutely dwarfs COVID-19. Liver disease caused directly by sugar intake is indirectly responsible for many often-fatal conditions, including high blood pressure, diabetes, circulatory disease, even metastatis of cancer. The only thing that can have any effect on that is massive policy changes, and a re-architecting of the public food supply.
This is not impossible: we have mostly eliminated hydrogenated fat from the US diet (although I recently found you can still buy Crisco at the grocery store!) So, artery blockage and heart disease from that will be on its way down. It took Fred Kummerow his entire career to get hydrogenated fat out of the American food system, from the '50s well into this millennium, but not substantially until 2017, even though it was known to be poison. (Europe banned it earlier.)
Try finding even a loaf of bread in the bread aisle of your supermarket that is less than 10% sugar. (You might find one or two. Good luck.) Even the multi-grain "healthy" ones are loaded. Check your sauces. Ketchup, mustard, barbeque sauce, mayonnaise, salad dressing, peanut butter, all usually have lots of sugar. So, even if you think you have cut it out, you probably haven't.
Kids have massive promotions directed at them to make them demand unlimited amounts of sugar. It works, they get it. Kids in the US are getting cirrhosis, like alcoholics.
This is not about self-discipline, it is about public policy. People will eat what is promoted to them, that they find on the shelves at the store, on the menu at the drive-through, in the snacks stock at the office. They will keep eating it while it makes them sick, and even while it kills them. (My mother-in-law died in October. She packed on sugar right to the end.)