For years we have believed in the benefits of flossing. Now it turns out that flossing isn't all that useful.
There have been doubts about the usefulness of flossing before. American journalists took action and demanded all investigations on flossing. The US government recommends flossing and should not do so without scientific evidence. The answer the journalists got was that there is no scientific basis for flossing.
Then the journalists went looking for themselves and what did they discover? There is no evidence that flossing does any good for your teeth. All flossing studies are sponsored by… floss manufacturers. The positive effects that emerged from the studies have already been undermined.